{"title":"NITRATES, CARBONATES, BORATES","description":"\u003cp\u003eNitrates are defined by their triangular (NO3)– groups, which bear a resemblance to the (CO3)2– groups found in carbonates, resulting in structural similarities between the two mineral classes. The nitrogen cation (N5+) possesses a high charge and exhibits strong polarizing characteristics, akin to the carbon cation (C4+) in the CO3 group. The NO3 group forms a tightly bound triangular complex through its three nitrogen-oxygen bonds, which are stronger than any other bonds present in the crystal structure. Due to the superior strength of the nitrogen-oxygen bond compared to the carbon-oxygen bond in carbonates, nitrates are less prone to decomposition when exposed to acids.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePlease, click on the picture for more pictures and details like dimensions (like 300 240 340 (LWD in mm), weight (in grams), locality and specimen number (SKU)).\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eIMAGE CREDIT: Unknown source\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","products":[{"product_id":"sphalerite-calcite-2-crystals-minerals-crystals2collect-rocks","title":"CALCITE ON SPHALERITE, ELMWOOD MINE TENNESSEE USA (CABINET)","description":"\u003cp class=\"MsoNormal\"\u003eSphalerite, a sulfide mineral represented by the chemical formula (Zn, Fe)S, serves as the principal ore for zinc extraction. This mineral occurs in various types of deposits, predominantly within sedimentary exhalative, Mississippi-Valley type, and volcanogenic massive sulfide formations. It is commonly associated with other minerals such as galena, chalcopyrite, pyrite, as well as calcite, dolomite, quartz, rhodochrosite, and fluorite.\u003cbr\u003e\u003cbr\u003eCalcite is a carbonate mineral and the most stable form of calcium carbonate (CaCO3). It is widely found, especially as a key element in limestone. With a hardness rating of 3 on the Mohs scale, calcite is assessed based on its ability to be scratched. Large crystals of calcite are utilized in optical devices, while limestone, primarily made up of calcite, serves a variety of purposes.\u003c\/p\u003e \u003cp\u003eThis specimen has also miniature crystals and thousands of tiny calcite or dolomite crystals (white), and the matrix is a sulfide.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"115 70 100   672","offer_id":49739999281428,"sku":"115 70 100   672","price":285.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3364.jpg?v=1771215974"},{"product_id":"aragonite-086-07","title":"ARAGONITE, MOROCCO (cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eAragonite\u003c\/strong\u003e is a carbonate mineral and ranks among the three most prevalent natural crystal forms of calcium carbonate (CaCO3), alongside calcite and vaterite. It is produced through both biological and physical processes, notably through precipitation in marine and freshwater settings.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"90 71 70  432","offer_id":49739999576340,"sku":"90 71 70  432","price":225.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250213_135814.jpg?v=1771216162"},{"product_id":"artinite-crystals-minerals-crystals2collect-rocks","title":"ARTINITE, SAN BENITO COUNTY, BENITOITE GEM MT DIABLO, CA, USA (miniature)","description":"\u003cp\u003e\u003cstrong\u003eARTINITE\u003c\/strong\u003e is a hydrated basic magnesium carbonate mineral represented by the formula Mg2(CO3)(OH)2·3H2O. This mineral typically forms white, silky monoclinic prismatic crystals, which can appear in radial clusters or as encrustations. With a Mohs hardness of 2.5 and a specific gravity of 2, artinite is relatively soft and lightweight. It is primarily found in low-temperature hydrothermal veins and within serpentinized ultramafic rocks, often occurring alongside minerals such as brucite, hydromagnesite, pyroaurite, chrysotile, aragonite, calcite, dolomite, and magnesite. First identified in 1902 in Lombardy, Italy, it was named in honor of the Italian mineralogist Ettore Artini (1866–1928).\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"30 30 30 6","offer_id":49739999805716,"sku":"30 30 30 6","price":475.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250417_093554.jpg?v=1771216327"},{"product_id":"azurite-3-malachite-crystals-minerals-crystals2collect-rocks","title":"AZURITE NAMIBIA (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eAzurite\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e, also referred to as Azure spar, is a soft, vibrant blue copper mineral formed through the weathering of copper ore deposits. In the early 19th century, it was commonly called chessylite, named after its type locality in Chessy-les-Mines, near Lyon, France. This mineral, characterized by the basic carbonate formula Cu3(CO3)2(OH)2, has a long history, having been noted in ancient texts such as Pliny the Elder's Natural History, where it was identified by the Greek term kuanos, meaning \"deep blue,\" and the Latin term caeruleum. The blue hue of azurite is attributed to the presence of copper ions.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"59 34 46  99","offer_id":49740000067860,"sku":"59 34 46  99","price":195.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250128_131704.jpg?v=1772791527"},{"product_id":"azurite-5-limonite-crystals-minerals-crystals2collect-rocks-malachite-crystals-minerals-crystals2collect-rocks","title":"AZURITE on LIMONITE, MORENCI, GREENLEE COUNTY, ARIZONA, USA (cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eAzurite\u003c\/strong\u003e has the chemical formula Cu3(CO3)2(OH)2, with copper(II) cations bonded to both carbonate and hydroxide anions. It is one of two relatively common basic copper(II) carbonate minerals, the other being the bright green malachite. Aurichalcite, on the other hand, is a rare basic carbonate mineral containing copper and zinc. Simple copper carbonate (CuCO3) is not found in nature due to the strong affinity of the Cu2+ ion for the hydroxide anion HO−.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eLimonite\u003c\/strong\u003e is an iron ore made up of a blend of hydrated iron(III) oxide-hydroxides with varying compositions. While it is often represented by the formula FeO(OH)·nH2O, this depiction is misleading since the proportions of oxide to hydroxide can differ significantly.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"80 70 70  232","offer_id":49740000133396,"sku":"80 70 70  232","price":359.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3488.jpg?v=1772791569"},{"product_id":"calcite-11-crystals-minerals-crystals2collect-rocks","title":"CALCITE (DOG TOOTH), BECKE-OESE, GERMANY, TRANSPARANT (large cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCalcite \u003c\/b\u003eis a carbonate mineral and the most stable form of calcium carbonate (CaCO3). It is widely found, especially as a key element in limestone. With a hardness rating of 3 on the Mohs scale, calcite is assessed based on its ability to be scratched. Large crystals of calcite are utilized in optical devices, while limestone, primarily made up of calcite, serves a variety of purposes.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"140 125 60 716","offer_id":49740259688724,"sku":"140 125 60 716","price":315.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241230_115524.jpg?v=1779189398"},{"product_id":"calcite-10-crystals-minerals-crystals2collect-rocks","title":"CALCITE (SNOWWHITE), BATOPILAS DISTRICT CHIHUAHUA MEXICO (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCalcite \u003c\/b\u003eis a carbonate mineral and the most stable form of calcium carbonate (CaCO3). It is widely found, especially as a key element in limestone. With a hardness rating of 3 on the Mohs scale, calcite is assessed based on its ability to be scratched. Large crystals of calcite are utilized in optical devices, while limestone, primarily made up of calcite, serves a variety of purposes.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"78 40 60 100","offer_id":49740002066708,"sku":"78 40 60 100","price":285.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250531_113350.jpg?v=1779189500"},{"product_id":"calcite-8-crystals-minerals-rocks-crystals2collect","title":"CALCITE - BROWN, CERA DEL MERCADO, DURANGO, MEXICO  (cabinet)","description":"\u003cp\u003eBROWN CALCITE\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003eCalcite is a carbonate mineral and the most stable form of calcium carbonate (CaCO3). It is widely found, especially as a key element in limestone. With a hardness rating of 3 on the Mohs scale, calcite is assessed based on its ability to be scratched. Large crystals of calcite are utilized in optical devices, while limestone, primarily made up of calcite, serves a variety of purposes.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e638 grams\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"120 110 70 300","offer_id":52538272284948,"sku":"120 110 70 300","price":195.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3108.jpg?v=1779189625"},{"product_id":"chalcopyrite-4-crystals-minerals-rocks-crystals2collect-sphalerite-quartz-manganocalcite","title":"SPHALERITE, CHALCOPYRITE, QUARTZ, MANGANOCALCITE. SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSphalerite,\u003c\/b\u003e a sulfide mineral represented by the chemical formula (Zn, Fe)S, serves as the principal ore for zinc extraction. This mineral occurs in various types of deposits, predominantly within sedimentary exhalative, Mississippi-Valley type, and volcanogenic massive sulfide formations. It is commonly associated with other minerals such as galena, chalcopyrite, pyrite, as well as calcite, dolomite, quartz, rhodochrosite, and fluorite.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eChalcopyrite\u003c\/b\u003e is a mineral composed of copper, iron, and sulfur, recognized as the primary source of copper ore. Its chemical composition is represented by the formula CuFeS2, and it crystallizes within the tetragonal system. The mineral exhibits a brassy to golden yellow hue and possesses a hardness rating of 3.5 to 4 on the Mohs scale, with a distinctive green-tinged black streak.\u003cbr\u003e\u003cbr\u003ePrivate Peruvian Collection, Very rare as the mines closed decades ago. Former Steve Moon Collection.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"85 52 50 139","offer_id":49740003279124,"sku":"85 52 50 139","price":750.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250611_162813.jpg?v=1779190167"},{"product_id":"cinnabar-cinnabaryrte-cinnabarite-mercurblende-crystals-minerals-rocks-crystals2collect","title":"CINNABAR (CINNABARITE or MERCURBLENDE) on CALCITE, HUNAN TIEN MINE, PRC  SMALL CABINET","description":"\u003cp\u003e\u003cstrong\u003eCinnabar\u003c\/strong\u003e, also referred to as \u003cstrong\u003ecinnabarite\u003c\/strong\u003e or \u003cstrong\u003emercurblende\u003c\/strong\u003e, is a vivid scarlet to brick-red variant of mercury(II) sulfide (HgS). It serves as the primary ore for extracting elemental mercury and has historically been the source of the striking red pigment known as vermilion, along with other red mercury-based pigments. \u003c\/p\u003e \u003cp\u003eThis mineral typically forms in veins linked to volcanic activity and alkaline hot springs, displaying symmetry similar to quartz and showing birefringence. Cinnabar has an average refractive index of about 3.2, a hardness rating between 2.0 and 2.5, and a specific gravity around 8.1. Its distinctive color and characteristics arise from its hexagonal crystalline structure, which belongs to the trigonal crystal system, with some crystals exhibiting twinning.\u003cbr\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"69 78 35  153","offer_id":49740003705108,"sku":"69 78 35  153","price":295.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250110_192323.jpg?v=1747135724"},{"product_id":"colemanite-crystals-minerals-rocks-crystals2collect","title":"COLEMANITE,  Mustafakemalpaşa, TURKYE UNUSUAL MASSIVE CRYSTALS (LARGE CABINET;","description":"\u003cp\u003e\u003cstrong\u003eColemanite\u003c\/strong\u003e, with the chemical formula Ca2B6O11·5H2O or alternatively CaB3O4(OH)3·H2O, is a borate mineral typically found in evaporite deposits within alkaline lake environments. This secondary mineral arises from the alteration of borax and ulexite. First identified in 1884 near Furnace Creek in Death Valley, it was named in honor of William Tell Coleman, the proprietor of the Harmony Borax Works where it was discovered. Interestingly, Coleman initially suggested the name \"smithite\" to recognize his business partner, Francis Marion Smith.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"140 60 130 1378","offer_id":52542354718996,"sku":"140 60 130 1378","price":1235.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250501_161246.jpg?v=1779190351"},{"product_id":"dioptase-1-crystals-minerals-rocks-crystals2collect","title":"DIOPTASE with CALCITE, TSUMEB MINE, TSUMEB, OSHIKOTO REGION, NAMIBIA (miniature)","description":"\u003cp\u003e\u003cstrong\u003eDioptase\u003c\/strong\u003e is a striking mineral characterized by its vibrant emerald-green to bluish-green hue, classified as a cyclosilicate of copper. It exhibits transparency to translucency and possesses a vitreous to sub-adamantine luster. The chemical formula for dioptase is Cu6Si6O18·6H2O, with an alternative representation as CuSiO2(OH)2. It has a Mohs hardness of 5, comparable to that of tooth enamel, and a specific gravity ranging from 3.28 to 3.35. The mineral features two perfect cleavage directions and one very good cleavage direction, but it is notably fragile, necessitating careful handling. Dioptase crystallizes in a trigonal system, forming six-sided crystals that end in rhombohedra. \u003c\/p\u003e \u003cp\u003eThis mineral is favored by collectors and is occasionally fashioned into small gemstones. Additionally, it can be ground into a pigment for artistic applications. Historically, dioptase was utilized to accentuate the eyes in the Pre-Pottery Neolithic B lime plaster statues found at 'Ain Ghazal, dating back to approximately 7200 BC. In the late 18th century, miners at the Altyn-Tyube mine in Kazakhstan mistakenly believed they had discovered an emerald deposit due to the presence of brilliant green crystals. However, the mineral's lower hardness of 5, in contrast to emerald's hardness of 8, revealed its true identity. In 1797, mineralogist Fr. René Just Haüy recognized this new mineral and named it dioptase, derived from Greek terms meaning \"through\" and \"visible,\" referencing the visible internal cleavage planes in intact crystals.\u003cbr\u003e\u003cbr\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eCalcite \u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003eis a carbonate mineral and the most stable form of calcium carbonate (CaCO3). It is widely found, especially as a key element in limestone. With a hardness rating of 3 on the Mohs scale, calcite is assessed based on its ability to be scratched. Large crystals of calcite are utilized in optical devices, while limestone, primarily made up of calcite, serves a variety of purposes.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"35 35 30 28","offer_id":49740005376276,"sku":"35 35 30 28","price":365.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250125_150041.jpg?v=1779190843"},{"product_id":"fluorite-10-crystals-minerals-rocks-crystals2collect-calcite","title":"FLUORITE (DEEP PURPLE) on CALCITE, ELMWOOD TENNESSEE, USA (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eFluorite\u003c\/b\u003e, known as fluorspar, is the mineral variant of calcium fluoride, represented by the formula CaF2. This mineral is classified within the halide group and typically forms in an isometric cubic structure, though octahedral and other intricate isometric shapes can also be found. According to the Mohs scale of mineral hardness, fluorite is assigned a hardness value of 4, determined through scratch resistance comparisons.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCalcite \u003c\/b\u003eis a carbonate mineral and the most stable form of calcium carbonate (CaCO3). It is widely found, especially as a key element in limestone. With a hardness rating of 3 on the Mohs scale, calcite is assessed based on its ability to be scratched. Large crystals of calcite are utilized in optical devices, while limestone, primarily made up of calcite, serves a variety of purposes.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"52 50 50 68","offer_id":49740006850836,"sku":"52 50 50 68","price":285.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250112_182642.jpg?v=1779191021"},{"product_id":"fluorite-7-crystals-minerals-rocks-crystals2collect","title":"FLUORITE, RUBY JACK SPHALERITE, DOLOMITE, Cerro de Pasco Pasco Prov. Pasco PERU (miniature)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eFluorite\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e, known as fluorspar, is the mineral variant of calcium fluoride, represented by the formula CaF2. This mineral is classified within the halide group and typically forms in an isometric cubic structure, though octahedral and other intricate isometric shapes can also be found. According to the Mohs scale of mineral hardness, fluorite is assigned a hardness value of 4, determined through scratch resistance comparisons.\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eSphalerite,\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e a sulfide mineral represented by the chemical formula (Zn, Fe)S, serves as the principal ore for zinc extraction. This mineral occurs in various types of deposits, predominantly within sedimentary exhalative, Mississippi-Valley type, and volcanogenic massive sulfide formations. It is commonly associated with other minerals such as galena, chalcopyrite, pyrite, as well as calcite, dolomite, quartz, rhodochrosite, and fluorite.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"50 15 34 13","offer_id":49740010062100,"sku":"50 15 34 13","price":495.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250125_145615.jpg?v=1779191350"},{"product_id":"howlite-crystals-rocks-minerals-crystals2collect-dolomite","title":"HOWLITE CRYSTALS (extremely rare) on DOLOMITE, NOVA SCOTIA, BRETON, IONA CAPE, CANADA (miniature)","description":"\u003cp\u003e\u003cstrong\u003eHowlite\u003c\/strong\u003e, a mineral composed of calcium borosilicate hydroxide (Ca2B5SiO9(OH)5), is classified as a borate and is typically found in evaporite deposits. \u003c\/p\u003e \u003cp\u003eThe mineral was first identified in 1868 by Canadian chemist and geologist Henry How near Windsor, Nova Scotia. Miners in a gypsum quarry initially regarded it as a nuisance, prompting How to investigate further. He initially named it silico-boro-calcite, but it was later renamed howlite by American geologist James Dwight Dana. \u003c\/p\u003e \u003cp\u003eGeologically, howlite is most commonly found in irregular nodules that can resemble cauliflower. While crystals of howlite are extremely rare, they have been discovered in a few locations, including Tick Canyon in California and Iona in Nova Scotia, with maximum crystal sizes reaching about one centimeter. The nodules are typically white, featuring fine grey or black veins in a chaotic, web-like pattern, and exhibit an opaque quality with a sub-vitreous luster. In contrast, the crystals from Iona can be colorless, white, or brown, often displaying translucence or transparency. Howlite has a monoclinic structure, a Mohs hardness of 3.5, and lacks regular cleavage, with prismatic crystals that are flattened on the {100} plane. Crystals from Tick Canyon are elongated along the 010 axis, while those from Iona extend along the 001 axis.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"48 41 18 34","offer_id":49740012486932,"sku":"48 41 18 34","price":385.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250412_144738.jpg?v=1779192260"},{"product_id":"magnetite-2-crystals-rocks-minerals-crystals2collect","title":"MAGNETITE with CALCITE, KOVDOR. KOLA, RUSSIA (small cabinet)","description":"\u003cp\u003e\u003cstrong\u003eMagnetite\u003c\/strong\u003e is a significant iron ore mineral characterized by the chemical formula Fe2+Fe3+2O4. As one of the iron oxides, it exhibits ferrimagnetic properties, meaning it is attracted to magnets and can be magnetized to form a permanent magnet. Aside from extremely rare native iron deposits, magnetite is the most magnetic naturally occurring mineral on Earth. Naturally magnetized fragments of magnetite, known as lodestone, were instrumental in the early discovery of magnetism by ancient civilizations, as they could attract small iron objects. This mineral typically appears black or brownish-black, possesses a metallic sheen, has a Mohs hardness ranging from 5 to 6, and produces a black streak when scratched.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"63 40 45 179","offer_id":49740014256404,"sku":"63 40 45 179","price":225.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250112_165019.jpg?v=1779192618"},{"product_id":"malachite-4-crystals-rocks-minerals-crystals2collect-chrysocolla","title":"MALACHITE WITH CHRYSOCOLLA, LIKASI SHABA, CONGO (cabinet)","description":"\u003cp\u003e\u003cbr\u003eThis specimen is from my personal collection and rare to get as the mine closed decades ago.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eMalachite\u003c\/strong\u003e is a mineral composed of copper carbonate hydroxide, represented by the chemical formula Cu2CO3(OH)2. This opaque mineral features distinctive green bands and crystallizes within the monoclinic system. It typically forms in botryoidal, fibrous, or stalagmitic shapes in fractures and subterranean environments, where the presence of hydrothermal fluids and the water table facilitate chemical precipitation. While individual crystals are uncommon, they can appear as slender or acicular prisms, and pseudomorphs resembling more tabular or blocky azurite crystals are also found.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eChrysocolla\u003c\/strong\u003e is a hydrous copper phyllosilicate mineral and mineraloid characterized by the formula Cu2 – xAlx(H2Si2O5)(OH)4⋅nH2O (where x \u0026lt; 1) or (Cu, Al)2H2Si2O5(OH)4⋅nH2O. The mineral's structural composition has been debated, with a 2006 spectrographic study indicating that what is commonly recognized as chrysocolla might actually be a combination of the copper hydroxide spertiniite and chalcedony.\u003cbr\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"100 60 80 251","offer_id":52539636121876,"sku":"100 60 80 251","price":425.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2497.jpg?v=1779192703"},{"product_id":"malachite-5-crystals-rocks-minerals-crystals2collect-chrysocolla","title":"MALACHITE, BISBEE, COCHISE COUNTY, ARIZONA, USA (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eMalachite\u003c\/b\u003e is a mineral composed of copper carbonate hydroxide, represented by the chemical formula Cu2CO3(OH)2. This opaque mineral features distinctive green bands and crystallizes within the monoclinic system. It typically forms in botryoidal, fibrous, or stalagmitic shapes in fractures and subterranean environments, where the presence of hydrothermal fluids and the water table facilitate chemical precipitation. While individual crystals are uncommon, they can appear as slender or acicular prisms, and pseudomorphs resembling more tabular or blocky azurite crystals are also found.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"90 38 70 217","offer_id":49740014453012,"sku":"90 38 70 217","price":325.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250530_191320.jpg?v=1779192720"},{"product_id":"malachite-6-crystals-rocks-minerals-crystals2collect-chrysocolla","title":"MALACHITE, BISBEE, COCHISE COUNTY, ARIZONA, USA (miniature)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eMalachite\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e is a mineral composed of copper carbonate hydroxide, represented by the chemical formula Cu2CO3(OH)2. This opaque mineral features distinctive green bands and crystallizes within the monoclinic system. It typically forms in botryoidal, fibrous, or stalagmitic shapes in fractures and subterranean environments, where the presence of hydrothermal fluids and the water table facilitate chemical precipitation. While individual crystals are uncommon, they can appear as slender or acicular prisms, and pseudomorphs resembling more tabular or blocky azurite crystals are also found.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"60 52 35 81","offer_id":49740014518548,"sku":"60 52 35 81","price":135.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250123_145952.jpg?v=1779192809"},{"product_id":"pyrite-5-quartz-sphalerite-manganocalcite-manganoan-crystals-rocks-minerals-crystals2collect","title":"PYRITE, QUARTZ, MANGANOCALCITE, SPHALERITE, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU (cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSphalerite\u003c\/b\u003e, a sulfide mineral represented by the formula (Zn, Fe)S, serves as the primary source of zinc. This mineral occurs in various types of deposits, predominantly in sedimentary exhalative, Mississippi-Valley type, and volcanogenic massive sulfide formations. It is commonly found alongside other minerals such as galena, chalcopyrite, pyrite, and various carbonates and silicates, including calcite, dolomite, quartz, rhodochrosite, and fluorite.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003ePyrite\u003c\/b\u003e, commonly referred to as fool's gold, is an iron sulfide with the chemical formula FeS2, also known as iron (II) disulfide. It is the most prevalent sulfide mineral found in nature.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eQuartz\u003c\/b\u003e is a robust crystalline mineral made up of silica, or silicon dioxide. Its structure consists of a continuous arrangement of SiO4 silicon-oxygen tetrahedra, where each oxygen atom is shared between two tetrahedra, resulting in the chemical formula SiO2. This classification places quartz as a framework silicate mineral in terms of structure and as an oxide mineral in terms of composition. It ranks as the second most prevalent mineral in the continental crust of Earth, following feldspar.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eManganoan calcite\u003c\/b\u003e, also known as manganocalcite, is a manganese-rich variety of calcite that exhibits a pink hue. Its chemical composition is represented by the formula (Ca,Mn)CO3. Initially identified in the Banská Štiavnica Mining District of the Slovak Republic, this mineral is found globally, with notable occurrences in the Cave of Swords in Naica, Chihuahua, Mexico, and in Bulgaria.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003eThere is often confusion between manganoan calcite and rhodochrosite due to their similarities. The manganese content in manganoan calcite can vary by location, and it exists in a solid solution series with calcite and rhodochrosite, resulting in a deeper red color as the manganese concentration increases.\u003cbr\u003e\u003cbr\u003ePrivate Peruvian Collection. Very rare as the mines closed decades ago. Former Steve Moon Collection.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"100 50 50  121","offer_id":49740017303828,"sku":"100 50 50  121","price":485.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250112_182846.jpg?v=1779193665"},{"product_id":"quartz-11-calcite-crystals-rocks-minerals-crystals2collect","title":"QUARTZ with CALCITE, PIZ BEVERIN, SWITZERLAND (cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eQuartz\u003c\/b\u003e is a robust crystalline mineral made up of silica, or silicon dioxide. Its structure consists of a continuous arrangement of SiO4 silicon-oxygen tetrahedra, where each oxygen atom is shared between two tetrahedra, resulting in the chemical formula SiO2. This classification places quartz as a framework silicate mineral in terms of structure and as an oxide mineral in terms of composition. It ranks as the second most prevalent mineral in the continental crust of Earth, following feldspar.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCalcite \u003c\/b\u003eis a carbonate mineral and the most stable form of calcium carbonate (CaCO3). It is widely found, especially as a key element in limestone. With a hardness rating of 3 on the Mohs scale, calcite is assessed based on its ability to be scratched. Large crystals of calcite are utilized in optical devices, while limestone, primarily made up of calcite, serves a variety of purposes.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"110 40 60  225","offer_id":49740017697044,"sku":"110 40 60  225","price":135.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3646.jpg?v=1779194021"},{"product_id":"rhodochrosite-10-crystals-rocks-minerals-crystals2collect-chalcopyrite-quartz","title":"RHODOCHROSITE, QUARTZ, CHALCOPYRITE, HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU (cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eChalcopyrite\u003c\/b\u003e is a mineral composed of copper, iron, and sulfur, recognized as the primary source of copper ore. Its chemical composition is represented by the formula CuFeS2, and it crystallizes within the tetragonal system. The mineral exhibits a brassy to golden yellow hue and possesses a hardness rating of 3.5 to 4 on the Mohs scale, with a distinctive green-tinged black streak.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eQuartz\u003c\/b\u003e is a robust crystalline mineral made up of silica, or silicon dioxide. Its structure consists of a continuous arrangement of SiO4 silicon-oxygen tetrahedra, where each oxygen atom is shared between two tetrahedra, resulting in the chemical formula SiO2. This classification places quartz as a framework silicate mineral in terms of structure and as an oxide mineral in terms of composition. It ranks as the second most prevalent mineral in the continental crust of Earth, following feldspar.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eRhodochrosite \u003c\/b\u003eis a manganese carbonate mineral characterized by the chemical formula MnCO3. While it is rarely found in its pure form, it usually exhibits a rose-red hue, though it can also appear in various shades of pink to pale brown. The mineral leaves a white streak and has a Mohs hardness ranging from 3.5 to 4.5. Its specific gravity falls between 3.45 and 3.6. Rhodochrosite crystallizes in the trigonal system and features a structure and cleavage consistent with the carbonate rhombohedral system.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"120 50 60 456","offer_id":49740018942228,"sku":"120 50 60 456","price":625.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250131_145603.jpg?v=1779194385"},{"product_id":"rhodochrosite-11-crystals-rocks-minerals-crystals2collect-chalcopyrite-quartz","title":"RHODOCHROSITE, CHALCOPYRITE, QUARTZ, HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU (miniature)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eRhodochrosite \u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003eis a manganese carbonate mineral characterized by the chemical formula MnCO3. While it is rarely found in its pure form, it usually exhibits a rose-red hue, though it can also appear in various shades of pink to pale brown. The mineral leaves a white streak and has a Mohs hardness ranging from 3.5 to 4.5. Its specific gravity falls between 3.45 and 3.6. Rhodochrosite crystallizes in the trigonal system and features a structure and cleavage consistent with the carbonate rhombohedral system.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eChalcopyrite \u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003eis a copper iron sulfide mineral and the most abundant copper ore mineral. It possesses the chemical formula CuFeS2 and crystallizes in the tetragonal system. Its appearance ranges from brassy to golden yellow, with a hardness rating of 3.5 to 4 on the Mohs scale. The streak of chalcopyrite is diagnostic, displaying a-tinged black color.\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-AU\"\u003eUpon exposure to air, chalcopyrite undergoes tarnishing, resulting in various oxides, hydroxides, and sulfates. Associated copper minerals include the sulfides bornite (Cu5FeS4), chalcocite (Cu2S), covellite (CuS), and digenite (Cu9S5); carbonates such as malachite and azurite; and, less frequently, oxides like cuprite (Cu2O). It is seldom found in association with native copper. Chalcopyrite also serves as a conductor of electricity.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"65 25 53 94","offer_id":49740018974996,"sku":"65 25 53 94","price":235.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250123_142102.jpg?v=1779194429"},{"product_id":"rhodochrosite-13-crystals-rocks-minerals-crystals2collect-chalcopyrite-quartz","title":"RHODOCHROSITE, CHALCOPYRITE, QUARTZ, HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU (miniature)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eRhodochrosite \u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003eis a manganese carbonate mineral characterized by the chemical formula MnCO3. While it is rarely found in its pure form, it usually exhibits a rose-red hue, though it can also appear in various shades of pink to pale brown. The mineral leaves a white streak and has a Mohs hardness ranging from 3.5 to 4.5. Its specific gravity falls between 3.45 and 3.6. Rhodochrosite crystallizes in the trigonal system and features a structure and cleavage consistent with the carbonate rhombohedral system.\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eChalcopyrite \u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003eis a copper iron sulfide mineral and the most abundant copper ore mineral. It possesses the chemical formula CuFeS2 and crystallizes in the tetragonal system. Its appearance ranges from brassy to golden yellow, with a hardness rating of 3.5 to 4 on the Mohs scale. The streak of chalcopyrite is diagnostic, displaying a-tinged black color.\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-AU\"\u003eUpon exposure to air, chalcopyrite undergoes tarnishing, resulting in various oxides, hydroxides, and sulfates. Associated copper minerals include the sulfides bornite (Cu5FeS4), chalcocite (Cu2S), covellite (CuS), and digenite (Cu9S5); carbonates such as malachite and azurite; and, less frequently, oxides like cuprite (Cu2O). It is seldom found in association with native copper. Chalcopyrite also serves as a conductor of electricity.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"35 32 45 60","offer_id":49740019040532,"sku":"35 32 45 60","price":225.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250126_120417.jpg?v=1779194458"},{"product_id":"rhodochrosite-16","title":"RHODOCHROSITE, CHALCOPYRITE, QUARTZ, HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU (miniature)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eRhodochrosite \u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003eis a manganese carbonate mineral characterized by the chemical formula MnCO3. While it is rarely found in its pure form, it usually exhibits a rose-red hue, though it can also appear in various shades of pink to pale brown. The mineral leaves a white streak and has a Mohs hardness ranging from 3.5 to 4.5. Its specific gravity falls between 3.45 and 3.6. Rhodochrosite crystallizes in the trigonal system and features a structure and cleavage consistent with the carbonate rhombohedral system.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eChalcopyrite \u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003eis a copper iron sulfide mineral and the most abundant copper ore mineral. It possesses the chemical formula CuFeS2 and crystallizes in the tetragonal system. Its appearance ranges from brassy to golden yellow, with a hardness rating of 3.5 to 4 on the Mohs scale. The streak of chalcopyrite is diagnostic, displaying a-tinged black color.\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-AU\"\u003eUpon exposure to air, chalcopyrite undergoes tarnishing, resulting in various oxides, hydroxides, and sulfates. Associated copper minerals include the sulfides bornite (Cu5FeS4), chalcocite (Cu2S), covellite (CuS), and digenite (Cu9S5); carbonates such as malachite and azurite; and, less frequently, oxides like cuprite (Cu2O). It is seldom found in association with native copper. Chalcopyrite also serves as a conductor of electricity.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"55 40 40 53","offer_id":49740019204372,"sku":"55 40 40 53","price":185.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250123_141900.jpg?v=1779194509"},{"product_id":"rhodochrosite-17-chalcopyrite-quartz-crystals-minerals-crystals2collect-rocks","title":"RHODOCHROSITE, CHALCOPYRITE, QUARTZ, HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU (miniature)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eRhodochrosite \u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003eis a manganese carbonate mineral characterized by the chemical formula MnCO3. While it is rarely found in its pure form, it usually exhibits a rose-red hue, though it can also appear in various shades of pink to pale brown. The mineral leaves a white streak and has a Mohs hardness ranging from 3.5 to 4.5. Its specific gravity falls between 3.45 and 3.6. Rhodochrosite crystallizes in the trigonal system and features a structure and cleavage consistent with the carbonate rhombohedral system.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eChalcopyrite \u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003eis a copper iron sulfide mineral and the most abundant copper ore mineral. It possesses the chemical formula CuFeS2 and crystallizes in the tetragonal system. Its appearance ranges from brassy to golden yellow, with a hardness rating of 3.5 to 4 on the Mohs scale. The streak of chalcopyrite is diagnostic, displaying a-tinged black color.\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-AU\"\u003eUpon exposure to air, chalcopyrite undergoes tarnishing, resulting in various oxides, hydroxides, and sulfates. Associated copper minerals include the sulfides bornite (Cu5FeS4), chalcocite (Cu2S), covellite (CuS), and digenite (Cu9S5); carbonates such as malachite and azurite; and, less frequently, oxides like cuprite (Cu2O). It is seldom found in association with native copper. Chalcopyrite also serves as a conductor of electricity.\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-AU\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"60 35 35 79","offer_id":49740019237140,"sku":"60 35 35 79","price":169.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250123_142247.jpg?v=1779194534"},{"product_id":"rhodochrosite-3-calcite-crystals-minerals-crystals2collect-rocks","title":"RHODOCHROSITE with CALCITE, SUNNYSIDE MINE, SILVERTIN, COLORADO, USA (miniature)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eRhodochrosite \u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003eis a manganese carbonate mineral characterized by the chemical formula MnCO3. Although it rarely occurs in its pure form, it usually exhibits a rose-red hue, though it can also appear in various shades of pink to pale brown. The mineral leaves a white streak and has a Mohs hardness ranging from 3.5 to 4.5. Its specific gravity falls between 3.45 and 3.6. Rhodochrosite crystallizes in the trigonal system and features a structure and cleavage consistent with the carbonate rhombohedral system.\u003cbr\u003e\u003cbr\u003eThis specimen is from the Sunnyside Mine in Silverton Colorado, mined around 1919.\u003cbr\u003eAn image under Long Wave UV is added.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"53 45 47 144","offer_id":49740019859732,"sku":"53 45 47 144","price":525.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250124_135310.jpg?v=1779194597"},{"product_id":"rhodochrosite-7-crystals-minerals-crystals2collect-rocks","title":"RHODOCHROSITE, MONT SAINT HILAIRE, QUEBEC, CANADA (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eRhodochrosite \u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003eis a manganese carbonate mineral characterized by the chemical formula MnCO3. While it is rarely found in its pure form, it usually exhibits a rose-red hue, though it can also appear in various shades of pink to pale brown. The mineral leaves a white streak and has a Mohs hardness ranging from 3.5 to 4.5. Its specific gravity falls between 3.45 and 3.6. Rhodochrosite crystallizes in the trigonal system and features a structure and cleavage consistent with the carbonate rhombohedral system.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"60 55 45 98","offer_id":49740020089108,"sku":"60 55 45 98","price":385.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250222_114357.jpg?v=1779194722"},{"product_id":"rhodochrosite-9-crystals-rocks-minerals-crystals2collect","title":"RHODOCHROSITE, N'CHWANING II MINE, KURUMAN, SOUTH-AFRICA (miniature)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eRhodochrosite \u003c\/b\u003eis a manganese carbonate mineral characterized by the chemical formula MnCO3. While it is rarely found in its pure form, it usually exhibits a rose-red hue, though it can also appear in various shades of pink to pale brown. The mineral leaves a white streak and has a Mohs hardness ranging from 3.5 to 4.5. Its specific gravity falls between 3.45 and 3.6. Rhodochrosite crystallizes in the trigonal system and features a structure and cleavage consistent with the carbonate rhombohedral system.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"40 40 30 46","offer_id":49740020187412,"sku":"40 40 30 46","price":310.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250610_162329.jpg?v=1779194755"},{"product_id":"smithonite-2-hemmimorphite-crystals-rocks-crystals2collect-minerals","title":"SMITHSONITE and HEMIMORPHITE, NEW NEVADA MINE  BATOPILAS DISTRICT CHIHUAHUA MEXICO (thumbnail)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eSmithsonite\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e, or zinc spar, is the mineral variant of zinc carbonate (ZnCO3). Initially, it was confused with hemimorphite until it was established that they are distinct minerals. Their similar appearances led to the use of the term calamine for both, causing some misunderstanding. The name smithsonite was given in 1832 by François Sulpice Beudant to honor the English scientist James Smithson, who first described the mineral in 1802. \u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-AU\"\u003eT\u003c\/span\u003e\u003cspan lang=\"EN-AU\"\u003ehis trigonal mineral exhibits a range of colors and is rarely found in well-formed crystals, typically appearing as earthy botryoidal masses. It has a Mohs hardness of 4.5 and a specific gravity ranging from 4.4 to 4.5.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eHemimorphite\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e is a chemical compound represented by the formula Zn4(Si2O7)(OH)2·H2O and is a constituent of the mineral calamine. This silicate mineral, along with smithsonite (ZnCO3), has been historically extracted from the upper regions of zinc and lead ores. Initially, both minerals were thought to be identical and categorized under the name calamine. However, in the latter part of the 18th century, it was determined that these distinct compounds coexisted within calamine, despite their close resemblance.\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-AU\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"20 15 30  8","offer_id":49740023562516,"sku":"20 15 30  8","price":155.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250219_153815.jpg?v=1779195300"},{"product_id":"smithonite-3-hemimorphite-crystals-rocks-crystals2collect-minerals","title":"SMITHSONITE on HEMIMORPHITE, LEVEL 8 SAN ANTONIO MINE SANTA EULALIA CHIHUAHUA MEXICO (miniature)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eSmithsonite\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e, or zinc spar, is the mineral variant of zinc carbonate (ZnCO3). Initially, it was confused with hemimorphite until it was established that they are distinct minerals. Their similar appearances led to the use of the term calamine for both, causing some misunderstanding. The name smithsonite was given in 1832 by François Sulpice Beudant to honor the English scientist James Smithson, who first described the mineral in 1802. \u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-AU\"\u003eThis trigonal mineral exhibits a range of colors and is rarely found in well-formed crystals, typically appearing as earthy botryoidal masses. It has a Mohs hardness of 4.5 and a specific gravity ranging from 4.4 to 4.5.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eHemimorphite\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e is a chemical compound represented by the formula Zn4(Si2O7)(OH)2·H2O and is a constituent of the mineral calamine. This silicate mineral, along with smithsonite (ZnCO3), has been historically extracted from the upper regions of zinc and lead ores. Initially, both minerals were thought to be identical and categorized under the name calamine. However, in the latter part of the 18th century, it was determined that these distinct compounds coexist within calamine, despite their close resemblance.\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-AU\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"50 20 30 107","offer_id":49740023595284,"sku":"50 20 30 107","price":250.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250119_154854.jpg?v=1779195312"},{"product_id":"smithonite-6-crystals-minerals-rocks-crystals2collect-zinc_spar","title":"SMITHSONITE, TSUMEB MINE, TSUMEB, OSHIKOTO REGION, NAMIBIA (cabinet)","description":"\u003cp\u003e\u003cstrong\u003eSmithsonite\u003c\/strong\u003e, or zinc spar, is the mineral form of zinc carbonate (ZnCO3). Initially, it was confused with hemimorphite due to their similar appearances, and both were referred to as calamine, which led to some misunderstandings. The mineral was officially named in 1832 by François Sulpice Beudant to honor the English scientist James Smithson, who first identified it in 1802. Smithsonite typically appears as earthy botryoidal masses rather than well-formed crystals and has a Mohs hardness of 4.5, with a specific gravity ranging from 4.4 to 4.5. It is primarily found as a secondary mineral in the weathering or oxidation zones of zinc-bearing ore deposits and can also form replacement bodies in carbonate rocks, contributing to zinc ore. Smithsonite is often associated with minerals such as hemimorphite, willemite, and malachite, and it can form limited solid solution series with manganese and iron, resulting in rhodochrosite and siderite, respectively. A notable bright yellow variety, sometimes referred to as \"turkey fat ore,\" derives its color from greenockite inclusions within the crystals.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"100 40 50 136","offer_id":49740023726356,"sku":"100 40 50 136","price":295.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250609_164101.jpg?v=1779195355"},{"product_id":"sphalerite-4-calcite-fluorite-crystals2collect-crystals-minerals-rocks","title":"SPHALERITE, CALCITE ON FLUORITE, HUARON, SAN JOSE DE HUAYLLAG DISTR. CERRO DE PASCO, PERU (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSphalerite,\u003c\/b\u003e a sulfide mineral represented by the chemical formula (Zn, Fe)S, serves as the primary source of zinc. This mineral occurs in various types of deposits, predominantly in sedimentary exhalative, Mississippi-Valley type, and volcanogenic massive sulfide formations. It is commonly associated with minerals such as galena, chalcopyrite, pyrite, as well as calcite, dolomite, quartz, rhodochrosite, and fluorite.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cbr\u003e\u003cstrong\u003eFluorite\u003c\/strong\u003e, also known as fluorspar, is the mineral form of calcium fluoride (CaF2) and is classified among the halide minerals. It typically crystallizes in an isometric cubic structure, although octahedral and more intricate forms can also be found. On the Mohs scale of mineral hardness, fluorite is assigned a value of 4, indicating its relative hardness. While pure fluorite is colorless and transparent under both visible and ultraviolet light, impurities often impart vibrant colors, making it a popular choice for ornamental and lapidary applications. In industrial contexts, fluorite serves as a flux in smelting processes and is utilized in the manufacture of specific glasses and enamels. The highest purity grades of fluorite are essential for producing fluoride, which is a key component in the production of hydrofluoric acid, a precursor for many fluorine-containing fine chemicals. Additionally, optically clear fluorite exhibits unique properties, such as anomalous partial dispersion, which allows its refractive index to vary with light wavelength, making it advantageous for crafting apochromatic lenses and valuable in photographic optics. Fluorite's optical characteristics extend to the far-ultraviolet and mid-infrared ranges, where traditional glasses are ineffective, and it is noted for its low dispersion and high refractive index relative to its density.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePrivate Peruvian Collection. Very rare as the mines closed decades ago. Former Steve Moon Collection. \u003c\/strong\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"52 32 52 129","offer_id":49740024185108,"sku":"52 32 52 129","price":850.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250610_162627.jpg?v=1779195527"},{"product_id":"sphalerite-7-chalcopyrite-manganoan-mangano_calcite-quartz-crystals-rocks-crystals2collect-minerals","title":"SPHALERITE, CHALCOPYRITE, MANGANO CALCITE, QUARTZ. ELMWOOD TENNESSEE, USA (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eSphalerite\u003c\/strong\u003e, a sulfide mineral represented by the formula (Zn, Fe)S, serves as the primary source of zinc. This mineral occurs in various types of deposits, predominantly in sedimentary exhalative, Mississippi-Valley type, and volcanogenic massive sulfide formations. It is commonly found alongside other minerals such as galena, chalcopyrite, pyrite, and various carbonates and silicates, including calcite, dolomite, quartz, rhodochrosite, and fluorite.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eChalcopyrite \u003c\/strong\u003eis a copper iron sulfide mineral and the most abundant copper ore mineral. It possesses the chemical formula CuFeS2 and crystallizes in the tetragonal system. Its appearance ranges from brassy to golden yellow, with a hardness rating of 3.5 to 4 on the Mohs scale. The streak of chalcopyrite is diagnostic, displaying a-tinged black color.\u003c\/p\u003e \u003cp\u003eUpon exposure to air, chalcopyrite undergoes tarnishing, resulting in various oxides, hydroxides, and sulfates. Associated copper minerals include the sulfides bornite (Cu5FeS4), chalcocite (Cu2S), covellite (CuS), and digenite (Cu9S5); carbonates such as malachite and azurite; and, less frequently, oxides like cuprite (Cu2O). It is seldom found in association with native copper. Chalcopyrite also serves as a conductor of electricity.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eManganoan calcite\u003c\/strong\u003e, also known as manganocalcite, is a variety of calcite that is rich in manganese, imparting a pink color to the mineral. Its chemical formula is (Ca,Mn)CO3. This mineral was first reported from the Banská Štiavnica Mining District in the Slovak Republic, but it is widely distributed globally, notably found in the Cave of Swords at Naica, Chihuahua,, as well as in Bulgaria.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eManganoan calcite\u003c\/strong\u003e is occasionally mistaken for rhodochrosite. The manganese content in manganoan calcite varies across different localities, and the mineral exhibits a solid solution series between calcite and rhodochrosite, with the color becoming redder as the proportion of manganese increases.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"85 60 80 341","offer_id":52539634319636,"sku":"85 60 80 341","price":495.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3511.jpg?v=1779195637"},{"product_id":"sphalerite-8-chalcopyrite-pyrite-quartz-calcite-crystals-rocks-crystals2collect-minerals","title":"CHALCOPYRITE, SPHALERITE, PYRITE, QUARTZ, CALCITE, HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU (large cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSphalerite,\u003c\/b\u003e a sulfide mineral represented by the chemical formula (Zn, Fe)S, serves as the principal ore for zinc extraction. This mineral occurs in various types of deposits, predominantly within sedimentary exhalative, Mississippi-Valley type, and volcanogenic massive sulfide formations. It is commonly associated with other minerals such as galena, chalcopyrite, pyrite, as well as calcite, dolomite, quartz, rhodochrosite, and fluorite.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eChalcopyrite \u003c\/b\u003eis a copper iron sulfide mineral and the most abundant copper ore mineral. It possesses the chemical formula CuFeS2 and crystallizes in the tetragonal system. Its appearance ranges from brassy to golden yellow, with a hardness rating of 3.5 to 4 on the Mohs scale. The streak of chalcopyrite is diagnostic, displaying a-tinged black color.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003eUpon exposure to air, chalcopyrite undergoes tarnishing, resulting in various oxides, hydroxides, and sulfates. Associated copper minerals include the sulfides bornite (Cu5FeS4), chalcocite (Cu2S), covellite (CuS), and digenite (Cu9S5); carbonates such as malachite and azurite; and, less frequently, oxides like cuprite (Cu2O). It is seldom found in association with native copper. Chalcopyrite also serves as a conductor of electricity.\u003cbr\u003e\u003cbr\u003ePrivate Peruvian Collection. Very rare as the mines closed decades ago. Former Steve Moon Collection.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"130 110 120 1353","offer_id":49740024316180,"sku":"130 110 120 1353","price":650.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250513_121304.jpg?v=1779195705"},{"product_id":"zaratite-crystals-rocks-crystals2collect-minerals","title":"ZARATITE, LORD BRASSY MINE, HEAZLEWOOD RIVER, TASMANIA, AUSTRALIA (small cabinet)","description":"\u003cp\u003e\u003cstrong\u003eZaratite\u003c\/strong\u003e is a vivid emerald green nickel carbonate mineral represented by the formula Ni3CO3(OH)4·4H2O. It crystallizes within the isometric system, appearing as massive or mammillary encrustations and vein fillings. With a specific gravity of 2.6 and a Mohs hardness ranging from 3 to 3.5, it exhibits no cleavage and is characterized by a brittle, conchoidal fracture. Its luster varies from vitreous to greasy.\u003c\/p\u003e \u003cp\u003eThis rare secondary mineral forms through the hydration or alteration of primary nickel and iron-bearing minerals such as chromite, pentlandite, pyrrhotite, and millerite during the serpentinization process of ultramafic rocks. A related mineral is hellyerite, with the formula NiCO3·6H2O. Zaratite was first discovered in 1851 at the Manolita mine in Teixedelo, Cedeira, La Coruña province, Galicia, Spain, and is named in honor of the Spanish diplomat and dramatist Antonio Gil y Zárate (1793–1861).\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"62 21.4 51 77","offer_id":49740029460756,"sku":"62 21.4 51 77","price":695.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250128_091422.jpg?v=1779196959"},{"product_id":"chalcophyllite-malachite-cuprite-crystals-rocks-crystals2collect-minerals","title":"CHALCOPHYLLITE, MALACHITE, CUPRITE, Redruth Cornwall England  (LARGE CABINET)","description":"\u003cp\u003e\u003cstrong\u003eChalcophyllite\u003c\/strong\u003e is a rare secondary mineral composed of copper arsenate, typically found in the oxidized zones of certain arsenic-rich copper deposits. Initially identified from samples in Germany, it was previously referred to as tamarite when sourced from Wheal Tamar in Cornwall, England, although this designation is now obsolete and should not be confused with the distinct amphibole mineral taramite. The name chalcophyllite derives from the Greek words for \"copper\" and \"leaf,\" highlighting its composition and layered structure. The literature presents two different chemical formulas for chalcophyllite: Cu18Al2(AsO4)4(SO4)3(OH)24·36(H2O) with a molar mass of 3098 g, and Cu18Al2(AsO4)3(SO4)3(OH)27·33(H2O) with a molar mass of 2956 g, indicating variability in water content influenced by ambient humidity.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eMalachite\u003c\/strong\u003e is a mineral composed of copper carbonate hydroxide, represented by the chemical formula Cu2CO3(OH)2. This opaque mineral features distinctive green bands and crystallizes within the monoclinic system. It typically forms in botryoidal, fibrous, or stalagmitic shapes in fractures and subterranean environments, where the presence of hydrothermal fluids and the water table facilitate chemical precipitation. While individual crystals are uncommon, they can appear as slender or acicular prisms, and pseudomorphs resembling more tabular or blocky azurite crystals are also found.\u003c\/p\u003e \u003cp\u003eCuprite is a copper(I) oxide mineral, specifically Cu2O, and serves as a minor source of copper. It features dark crystals that exhibit red internal reflections and belongs to the isometric system's hexoctahedral class, presenting in cubic, octahedral, or dodecahedral shapes, often in various combinations. Penetration twins are a common occurrence. Despite its attractive color, cuprite is seldom utilized in jewelry due to its relatively low Mohs hardness of 3.5 to 4. It possesses a high specific gravity of 6.1, exhibits imperfect cleavage, and is brittle with a conchoidal fracture. The mineral's luster ranges from sub-metallic to brilliant adamantine. The \"chalcotrichite\" variety, derived from Ancient Greek meaning \"plush copper ore,\" is characterized by elongated, needle-like crystal formations that are aligned parallel to the [001] direction.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"160 130 30 760","offer_id":49832048001300,"sku":"160 130 30 760","price":930.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3256.jpg?v=1779197965"},{"product_id":"chalcopyrite-pyrite-sphalerite-quartz-manganoan-manganocalcite-crystals-crystals2collect-minerals-rocks-03","title":"CHALCOPYRITE, PYRITE, MANGANO CALCITE, SPHALERITE with QUARTZ, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU  (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eChalcopyrite \u003c\/b\u003eis a copper iron sulfide mineral and the most abundant copper ore mineral. It possesses the chemical formula CuFeS2 and crystallizes in the tetragonal system. Its appearance ranges from brassy to golden yellow, with a hardness rating of 3.5 to 4 on the Mohs scale. The streak of chalcopyrite is diagnostic, displaying a-tinged black color.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003eUpon exposure to air, chalcopyrite undergoes tarnishing, resulting in various oxides, hydroxides, and sulfates. Associated copper minerals include the sulfides bornite (Cu5FeS4), chalcocite (Cu2S), covellite (CuS), and digenite (Cu9S5); carbonates such as malachite and azurite; and, less frequently, oxides like cuprite (Cu2O). It is seldom found in association with native copper. Chalcopyrite also serves as a conductor of electricity.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eManganoan calcite\u003c\/b\u003e, also known as manganocalcite, is a manganese-rich variety of calcite that exhibits a pink hue. Its chemical composition is represented by the formula (Ca,Mn)CO3. Initially identified in the Banská Štiavnica Mining District of the Slovak Republic, this mineral is found globally, with notable occurrences in the Cave of Swords in Naica, Chihuahua, Mexico, and in Bulgaria.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003eThere is often confusion between manganoan calcite and rhodochrosite due to their similarities. The manganese content in manganoan calcite can vary by location, and it exists in a solid solution series with calcite and rhodochrosite, resulting in a deeper red color as the manganese concentration increases.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cbr\u003e\u003cb\u003ePyrite\u003c\/b\u003e, commonly referred to as fool's gold, is an iron sulfide with the chemical formula FeS2, also known as iron (II) disulfide. It is the most prevalent sulfide mineral found in nature.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSphalerite\u003c\/b\u003e, a sulfide mineral represented by the formula (Zn, Fe)S, serves as the primary source of zinc. This mineral occurs in various types of deposits, predominantly in sedimentary exhalative, Mississippi-Valley type, and volcanogenic massive sulfide formations. It is commonly found alongside other minerals such as galena, chalcopyrite, pyrite, and various carbonates and silicates, including calcite, dolomite, quartz, rhodochrosite, and fluorite.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eQuartz\u003c\/b\u003e is a robust crystalline mineral made up of silica, or silicon dioxide. Its structure consists of a continuous arrangement of SiO4 silicon-oxygen tetrahedra, where each oxygen atom is shared between two tetrahedra, resulting in the chemical formula SiO2. This classification places quartz as a framework silicate mineral in terms of structure and as an oxide mineral in terms of composition. It ranks as the second most prevalent mineral in the continental crust of Earth, following feldspar.\u003cbr\u003e\u003cbr\u003ePrivate Peruvian Collection. Very rare specimen because the mines are closed for decades. Former Steve Moon Collection.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"80 60 55 145","offer_id":49924642210068,"sku":"80 60 55 145","price":765.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241227_093146.jpg?v=1779198707"},{"product_id":"chalcopyrite-pyrite-quartz-manganoan_calcite-manganocalcite-crystals-crystals2collect-minerals-rocks","title":"CHALCOPYRITE, PYRITE, MANGANOCALCITE with QUARTZ, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU  (cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eChalcopyrite \u003c\/b\u003eis a copper iron sulfide mineral and the most abundant copper ore mineral. It possesses the chemical formula CuFeS2 and crystallizes in the tetragonal system. Its appearance ranges from brassy to golden yellow, with a hardness rating of 3.5 to 4 on the Mohs scale. The streak of chalcopyrite is diagnostic, displaying a-tinged black color.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003eUpon exposure to air, chalcopyrite undergoes tarnishing, resulting in various oxides, hydroxides, and sulfates. Associated copper minerals include the sulfides bornite (Cu5FeS4), chalcocite (Cu2S), covellite (CuS), and digenite (Cu9S5); carbonates such as malachite and azurite; and, less frequently, oxides like cuprite (Cu2O). It is seldom found in association with native copper. Chalcopyrite also serves as a conductor of electricity.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eQuartz\u003c\/b\u003e is a robust crystalline mineral made up of silica, or silicon dioxide. Its structure consists of a continuous arrangement of SiO4 silicon-oxygen tetrahedra, where each oxygen atom is shared between two tetrahedra, resulting in the chemical formula SiO2. This classification places quartz as a framework silicate mineral in terms of structure and as an oxide mineral in terms of composition. It ranks as the second most prevalent mineral in the continental crust of Earth, following feldspar.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003ePyrite\u003c\/b\u003e, commonly referred to as fool's gold, is an iron sulfide with the chemical formula FeS2, also known as iron (II) disulfide. It is the most prevalent sulfide mineral found in nature.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eManganoan calcite\u003c\/b\u003e, also known as manganocalcite, is a manganese-rich variety of calcite that exhibits a pink hue. Its chemical composition is represented by the formula (Ca,Mn)CO3. Initially identified in the Banská Štiavnica Mining District of the Slovak Republic, this mineral is found globally, with notable occurrences in the Cave of Swords in Naica, Chihuahua, Mexico, and in Bulgaria.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003eThere is often confusion between manganoan calcite and rhodochrosite due to their similarities. The manganese content in manganoan calcite can vary by location, and it exists in a solid solution series with calcite and rhodochrosite, resulting in a deeper red color as the manganese concentration increases.\u003cbr\u003e\u003cbr\u003ePrivate Peruvian Colletion. Very rare as the mines are closed for decades. Former Steve Moon Collection.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"100 90 75 495","offer_id":49924941611284,"sku":"100 90 75 495","price":795.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241227_123711.jpg?v=1779198733"},{"product_id":"chalcopyrite-rhodochrosite-pyrite-crystals-crystals2collect-minerals-rocks-05","title":"RHODOCHROSITE, CHALCOPYRITE, PYRITE, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU  (cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eChalcopyrite\u003c\/b\u003e is a mineral composed of copper, iron, and sulfur, recognized as the primary source of copper ore. Its chemical composition is represented by the formula CuFeS2, and it crystallizes within the tetragonal system. The mineral exhibits a brassy to golden yellow hue and possesses a hardness rating of 3.5 to 4 on the Mohs scale, with a distinctive green-tinged black streak.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eRhodochrosite \u003c\/b\u003eis a manganese carbonate mineral characterized by the chemical formula MnCO3. While it is rarely found in its pure form, it usually exhibits a rose-red hue, though it can also appear in various shades of pink to pale brown. The mineral leaves a white streak and has a Mohs hardness ranging from 3.5 to 4.5. Its specific gravity falls between 3.45 and 3.6. Rhodochrosite crystallizes in the trigonal system and features a structure and cleavage consistent with the carbonate rhombohedral system.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003ePyrite\u003c\/b\u003e, commonly referred to as fool's gold, is an iron sulfide with the chemical formula FeS2, also known as iron (II) disulfide. It is the most prevalent sulfide mineral found in nature.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003ePrivate Peruvian Collection. Very rare as the mines are closed for decades.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"105 70 60 315","offer_id":49931103731988,"sku":"105 70 60 315","price":998.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241230_101134.jpg?v=1779198808"},{"product_id":"quartz-sphalerite-chalcopyrite-pyrite-mangano_calcite-manganoan-crystals-crystals2collect-minerals-rocks-06","title":"QUARTZ with SPHALERITE, CHALCOPYRITE, PYRITE and MANGANOCALCITE, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU large cabinet","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSphalerite,\u003c\/b\u003e a sulfide mineral represented by the chemical formula (Zn, Fe)S, serves as the primary source of zinc. This mineral occurs in various types of deposits, predominantly in sedimentary exhalative, Mississippi-Valley type, and volcanogenic massive sulfide formations. It is commonly associated with minerals such as galena, chalcopyrite, pyrite, as well as calcite, dolomite, quartz, rhodochrosite, and fluorite.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eQuartz\u003c\/b\u003e is a robust crystalline mineral made up of silica, or silicon dioxide. Its structure consists of a continuous arrangement of SiO4 silicon-oxygen tetrahedra, where each oxygen atom is shared between two tetrahedra, resulting in the chemical formula SiO2. This classification places quartz as a framework silicate mineral in terms of structure and as an oxide mineral in terms of composition. It ranks as the second most prevalent mineral in the continental crust of Earth, following feldspar.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eChalcopyrite \u003c\/b\u003eis a copper iron sulfide mineral and the most abundant copper ore mineral. It possesses the chemical formula CuFeS2 and crystallizes in the tetragonal system. Its appearance ranges from brassy to golden yellow, with a hardness rating of 3.5 to 4 on the Mohs scale. The streak of chalcopyrite is diagnostic, displaying a-tinged black color.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003eUpon exposure to air, chalcopyrite undergoes tarnishing, resulting in various oxides, hydroxides, and sulfates. Associated copper minerals include the sulfides bornite (Cu5FeS4), chalcocite (Cu2S), covellite (CuS), and digenite (Cu9S5); carbonates such as malachite and azurite; and, less frequently, oxides like cuprite (Cu2O). It is seldom found in association with native copper. Chalcopyrite also serves as a conductor of electricity.\u003cbr\u003e\u003cbr\u003ePrivate Peruvian Collection. Very rare as the mines are closed for decades. Former Steve Moon Collection.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003ePyrite\u003c\/b\u003e, commonly referred to as fool's gold, is an iron sulfide with the chemical formula FeS2, also known as iron (II) disulfide. It is the most prevalent sulfide mineral found in nature.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"105 80 51 229","offer_id":49933696696596,"sku":"105 80 51 229","price":450.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241230_141926.jpg?v=1779198868"},{"product_id":"azurite-crystals-crystals2collect-minerals-rocks-03","title":"AZURITE, ZAIRE (LARGE CABINET)","description":"\u003cp\u003e\u003cstrong\u003eAzurite\u003c\/strong\u003e, also referred to as Azure spar, is a soft, vibrant blue copper mineral formed through the weathering of copper ore deposits. In the early 19th century, it was commonly called chessylite, named after its type locality in Chessy-les-Mines, near Lyon, France. This mineral, characterized by the basic carbonate formula Cu3(CO3)2(OH)2, has a long history, having been noted in ancient texts such as Pliny the Elder's Natural History, where it was identified by the Greek term kuanos, meaning \"deep blue,\" and the Latin term caeruleum. The blue hue of azurite is attributed to the presence of copper ions.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"100 85 65 515","offer_id":49933762494740,"sku":"100 85 65 515","price":365.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241230_142412.jpg?v=1779198961"},{"product_id":"chalcopyrite-rhodochrosite-quartz-sphalerite-crystals-crystals2collect-minerals-rocks05","title":"RHODOCHROSITE, CHALCOPYRITE, QUARTZ, SPHALERITE, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eChalcopyrite\u003c\/b\u003e is a mineral composed of copper, iron, and sulfur, recognized as the primary source of copper ore. Its chemical composition is represented by the formula CuFeS2, and it crystallizes within the tetragonal system. The mineral exhibits a brassy to golden yellow hue and possesses a hardness rating of 3.5 to 4 on the Mohs scale, with a distinctive green-tinged black streak.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eQuartz\u003c\/b\u003e is a robust crystalline mineral made up of silica, or silicon dioxide. Its structure consists of a continuous arrangement of SiO4 silicon-oxygen tetrahedra, where each oxygen atom is shared between two tetrahedra, resulting in the chemical formula SiO2. This classification places quartz as a framework silicate mineral in terms of structure and as an oxide mineral in terms of composition. It ranks as the second most prevalent mineral in the continental crust of Earth, following feldspar.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eRhodochrosite \u003c\/b\u003eis a manganese carbonate mineral characterized by the chemical formula MnCO3. While it is rarely found in its pure form, it usually exhibits a rose-red hue, though it can also appear in various shades of pink to pale brown. The mineral leaves a white streak and has a Mohs hardness ranging from 3.5 to 4.5. Its specific gravity falls between 3.45 and 3.6. Rhodochrosite crystallizes in the trigonal system and features a structure and cleavage consistent with the carbonate rhombohedral system.\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSphalerite,\u003c\/b\u003e a sulfide mineral represented by the chemical formula (Zn, Fe)S, serves as the primary source of zinc. This mineral occurs in various types of deposits, predominantly in sedimentary exhalative, Mississippi-Valley type, and volcanogenic massive sulfide formations. It is commonly associated with minerals such as galena, chalcopyrite, pyrite, as well as calcite, dolomite, quartz, rhodochrosite, and fluorite.\u003cbr\u003e\u003cbr\u003ePrivate Peruvian Collection. Very rare as the mines are closed for decades.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"63 32 34 55","offer_id":49934708605204,"sku":"63 32 34 55","price":695.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241231_180303.jpg?v=1779199123"},{"product_id":"smithsonite-crystals-crystals2collect-minerals-rocks-01","title":"SMITHSONITE, TSUMEB MINE, TSUMEB, OSHIKOTO REGION, NAMIBIA (miniature)","description":"\u003cp\u003e\u003cstrong\u003eSmithsonite\u003c\/strong\u003e, or zinc spar, is the mineral variant of zinc carbonate (ZnCO3). Initially, it was confused with hemimorphite until it was established that they are distinct minerals. Their similar appearances led to the use of the term calamine for both, causing some misunderstanding. The name smithsonite was given in 1832 by François Sulpice Beudant to honor the English scientist James Smithson, who first described the mineral in 1802. \u003c\/p\u003e \u003cp\u003eThis trigonal mineral exhibits a range of colors and is rarely found in well-formed crystals, typically appearing as earthy botryoidal masses. This specimen has it all.  It has a Mohs hardness of 4.5 and a specific gravity ranging from 4.4 to 4.5. \u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"48 31 35 82","offer_id":49937179607316,"sku":"48 31 35 82","price":360.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250101_112958.jpg?v=1779199165"},{"product_id":"calcite-dog_tooth_calcite-crystals-crystals2collect-minerals-rocks-02","title":"CALCITE (DOG TOOTH) GREY, BECKE-OESE, GERMANY (LARGE CABINET)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCalcite \u003c\/b\u003eis a carbonate mineral and the most stable form of calcium carbonate (CaCO3). It is widely found, especially as a key element in limestone. With a hardness rating of 3 on the Mohs scale, calcite is assessed based on its ability to be scratched. Large crystals of calcite are utilized in optical devices, while limestone, primarily made up of calcite, serves a variety of purposes.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"200 150 25 586","offer_id":49968994844948,"sku":"200 150 25 586","price":215.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250110_144405.jpg?v=1779199635"},{"product_id":"lazulite-copy","title":"LAZULITE, SCORZALITE with GORMANITE (EXTREMELY RARE) with QUARTZ NEEDLES and CALCITE, Crosscut Creek Yukon Canada (cabinet)","description":"\u003cp\u003e\u003cstrong\u003eLazulite\u003c\/strong\u003e, also known as Azure spar, is a \u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eblue\u003c\/strong\u003e\u003c\/span\u003e mineral that ranges from transparent to semi-opaque. It is composed of magnesium, iron, and aluminum phosphates, with the chemical formula (Mg,Fe2+)Al2(PO4)2(OH)2. Lazulite is part of a solid solution series that includes the darker, iron-rich mineral \u003cstrong\u003escorzalite\u003c\/strong\u003e, which is also to be found on this specimen.\u003c\/p\u003e \u003cp\u003eThis mineral crystallizes in the monoclinic system, exhibiting crystal forms that are typically steep bipyramidal or wedge-shaped. Lazulite has a Mohs hardness rating between 5.5 and 6.0, along with a specific gravity of 3.0 to 3.1. It is characterized by its infusibility and insolubility.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eGormanite\u003c\/strong\u003e is an extremely rare phosphate mineral characterized by the chemical formula (Fe,Mg)3Al4(PO4)4(OH)6·2H2O. The mineral is named in honor of Donald Herbert Gorman, a professor at the University of Toronto from 1922 to 2020. \u003c\/p\u003e \u003cp\u003eIt was first identified in 1981, with notable occurrences found in Rapid Creek and Big Fish River within the Dawson Mining District of Yukon Territory, Canada. At these type localities, Gormanite appears as veins within iron phosphate nodules. Additionally, in Bisbee, Arizona, it is found as sizable crystals situated in fractures of a tonalite intrusive.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eScorzalite\u003c\/strong\u003e ((Fe2+,Mg)Al2(OH,PO4)2) is a \u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003edark blue\u003c\/strong\u003e\u003c\/span\u003e phosphate mineral composed of iron, magnesium, and aluminum phosphate. It represents one end of a solid solution series with lazulite, which is lighter and richer in magnesium.\u003c\/p\u003e \u003cp\u003eThis mineral crystallizes in the monoclinic system, exhibiting a dipyramidal shape. With a Mohs hardness ranging from 5.5 to 6 and a specific gravity of 3.4, scorzalite is characterized by its infusibility and insolubility in water, showing only slight solubility in warm hydrochloric acid.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"85 29 29 30","offer_id":49973362753812,"sku":"85 29 29 30","price":750.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250111_114909.jpg?v=1779199850"},{"product_id":"lazulite-scorzalite-gormanite-quartz-calcite-02","title":"LAZULITE with GORMANITE (EXTREMELY RARE) with QUARTZ and CALCITE, Crosscut Creek Yukon Canada (small cabinet)","description":"\u003cp\u003e\u003cstrong\u003eLazulite\u003c\/strong\u003e, also known as Azure spar, is a \u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eblue\u003c\/strong\u003e\u003c\/span\u003e mineral that ranges from transparent to semi-opaque. It is composed of magnesium, iron, and aluminum phosphates, with the chemical formula (Mg,Fe2+)Al2(PO4)2(OH)2. Lazulite is part of a solid solution series that includes the darker, iron-rich mineral \u003cstrong\u003escorzalite\u003c\/strong\u003e.\u003c\/p\u003e \u003cp\u003eThis mineral crystallizes in the monoclinic system, exhibiting crystal forms that are typically steep bipyramidal or wedge-shaped. Lazulite has a Mohs hardness rating between 5.5 and 6.0, along with a specific gravity of 3.0 to 3.1. It is characterized by its infusibility and insolubility.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eGormanite\u003c\/strong\u003e is an extremely rare phosphate mineral characterized by the chemical formula (Fe,Mg)3Al4(PO4)4(OH)6·2H2O. The mineral is named in honor of Donald Herbert Gorman, a professor at the University of Toronto from 1922 to 2020. \u003c\/p\u003e \u003cp\u003eIt was first identified in 1981, with notable occurrences found in Rapid Creek and Big Fish River within the Dawson Mining District of Yukon Territory, Canada. At these type localities, Gormanite appears as veins within iron phosphate nodules. Additionally, in Bisbee, Arizona, it is found as sizable crystals situated in fractures of a tonalite intrusive.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"60 21 15 19","offer_id":49976211996948,"sku":"60 21 15 19","price":615.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250112_090002.jpg?v=1779199990"},{"product_id":"lazulite-gormanite-quartz-calcite-01","title":"LAZULITE with GORMANITE (EXTREMELY RARE) with QUARTZ and CALCITE, Crosscut Creek Yukon Canada (small cabinet)","description":"\u003cp\u003e\u003cstrong\u003eLazulite\u003c\/strong\u003e, also known as Azure spar, is a \u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eblue\u003c\/strong\u003e\u003c\/span\u003e mineral that ranges from transparent to semi-opaque. It is composed of magnesium, iron, and aluminum phosphates, with the chemical formula (Mg,Fe2+)Al2(PO4)2(OH)2. Lazulite is part of a solid solution series that includes the darker, iron-rich mineral \u003cstrong\u003escorzalite\u003c\/strong\u003e.\u003c\/p\u003e \u003cp\u003eThis mineral crystallizes in the monoclinic system, exhibiting crystal forms that are typically steep bipyramidal or wedge-shaped. Lazulite has a Mohs hardness rating between 5.5 and 6.0, along with a specific gravity of 3.0 to 3.1. It is characterized by its infusibility and insolubility.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eGormanite\u003c\/strong\u003e is an extremely rare phosphate mineral characterized by the chemical formula (Fe,Mg)3Al4(PO4)4(OH)6·2H2O. The mineral is named in honor of Donald Herbert Gorman, a professor at the University of Toronto from 1922 to 2020. \u003c\/p\u003e \u003cp\u003eIt was first identified in 1981, with notable occurrences found in Rapid Creek and Big Fish River within the Dawson Mining District of Yukon Territory, Canada. At these type localities, Gormanite appears as veins within iron phosphate nodules. Additionally, in Bisbee, Arizona, it is found as sizable crystals situated in fractures of a tonalite intrusive.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"63 30 28 58","offer_id":49976231395604,"sku":"63 30 28 58","price":625.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250112_090527.jpg?v=1779199990"},{"product_id":"lazulite-gormanite-quartz-calcite-crystals-crystals2collect-minerals-rocks","title":"LAZULITE with GORMANITE (EXTREMELY SCARCE) with QUARTZ and CALCITE, Crosscut Creek Yukon Canada (small cabinet)","description":"\u003cp\u003e\u003cstrong\u003eLazulite\u003c\/strong\u003e, also known as Azure spar, is a \u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eblue\u003c\/strong\u003e\u003c\/span\u003e mineral that ranges from transparent to semi-opaque. It is composed of magnesium, iron, and aluminum phosphates, with the chemical formula (Mg,Fe2+)Al2(PO4)2(OH)2. Lazulite is part of a solid solution series that includes the darker, iron-rich mineral \u003cstrong\u003escorzalite\u003c\/strong\u003e.\u003c\/p\u003e \u003cp\u003eThis mineral crystallizes in the monoclinic system, exhibiting crystal forms that are typically steep bipyramidal or wedge-shaped. Lazulite has a Mohs hardness rating between 5.5 and 6.0, along with a specific gravity of 3.0 to 3.1. It is characterized by its infusibility and insolubility.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eGormanite\u003c\/strong\u003e is an extremely rare and scarce phosphate mineral characterized by the chemical formula (Fe,Mg)3Al4(PO4)4(OH)6·2H2O. The mineral is named in honor of Donald Herbert Gorman, a professor at the University of Toronto from 1922 to 2020. \u003c\/p\u003e \u003cp\u003eIt was first identified in 1981, with notable occurrences found in Rapid Creek and Big Fish River within the Dawson Mining District of Yukon Territory, Canada. At these type localities, Gormanite appears as veins within iron phosphate nodules. Additionally, in Bisbee, Arizona, it is found as sizable crystals situated in fractures of a tonalite intrusive.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"62 30 12 31","offer_id":49976803033364,"sku":"62 30 12 31","price":485.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250112_165345.jpg?v=1779200157"},{"product_id":"whiteite-arrojadite-quartz-azurite-siderite-crystals-crystals2collect-minerals-rocks-02","title":"WHITEITE (EXTREMELY SCARCE), ARROJADITE, QUARTZ, AZURITE, SIDERITE","description":"\u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhiteite\u003c\/strong\u003e is an extremely rare and scarce mineral classified as a hydrated hydroxyphosphate. \u003c\/p\u003e \u003cp\u003eThe term whiteite encompasses three distinct minerals within the jahnsite-whiteite group, specifically the whiteite subgroup. These include Whiteite-(CaFeMg), Whiteite-(MnFeMg), and Whiteite-(CaMnMg), each with unique chemical formulas. The formulae indicate the dominant atom in specific structural positions, with magnesium consistently occupying the M(2) position across all whiteite varieties. The mineral is named in honor of John Sampson White Jr., who served as an associate curator of minerals at the Smithsonian Institution and was the founder and editor of the Mineralogical Record from 1970 to 1982.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eArrojadite \u003c\/strong\u003e \u003c\/p\u003e \u003cdiv\u003e \u003cdiv id=\"introdata\"\u003e \u003cdiv\u003e \u003cdiv class=\"twocol\"\u003e\u003cspan\u003eA\u003csub\u003e2\u003c\/sub\u003e E\u003csub\u003e2\u003c\/sub\u003eCaNa\u003csub\u003e2+x\u003c\/sub\u003eM\u003csub\u003e13\u003c\/sub\u003eR (PO\u003csub\u003e3\u003c\/sub\u003eOH)\u003csub\u003e1-x\u003c\/sub\u003e(PO\u003csub\u003e4\u003c\/sub\u003e)\u003csub\u003e11\u003c\/sub\u003eW\u003csub\u003e2\u003c\/sub\u003e\u003c\/span\u003e\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"clearer\"\u003e\u003cbr\u003e\u003c\/div\u003e \u003cdiv class=\"padder4 lineandahalf\"\u003eA group of basic phosphate minerals with the general formula indicated above, where:\u003cbr\u003e\u003cbr\u003eA denotes a large divalent cation (Ba, Sr, Pb) plus a vacancy, or two monovalent cations (K, Na),\u003cbr\u003eE denotes a small divalent cation (Fe, Mn, Mg) plus a vacancy, or two Na cations,\u003cbr\u003eM is a small divalent cation (Fe, Mn, Mg), whose identity defines the root-name: Fe, arrojadite, or Mn, dickinsonite,\u003cbr\u003eR is a small trivalent cation (Al, Fe) and\u003cbr\u003eW is a hydroxide or fluoride ion.\u003cbr\u003e\u003cbr\u003eAn arrojadite from Yukon contains traces of N (~700 ppm of N) in the form of NH\u003csub\u003e4\u003c\/sub\u003e\u003csup\u003e+\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eions.\u003c\/div\u003e \u003cdiv class=\"padder4 lineandahalf\"\u003e\u003cbr\u003e\u003c\/div\u003e \u003cdiv class=\"padder4 lineandahalf\"\u003e \u003cp\u003e\u003cstrong\u003eSiderite\u003c\/strong\u003e is a mineral made up of iron(II) carbonate (FeCO3), deriving its name from the Ancient Greek term σίδηρος (sídēros), which translates to \"iron.\" This mineral is an important source of iron, containing 48% iron while being free of sulfur and phosphorus. Iron can be replaced by elements such as zinc, magnesium, and manganese, leading to the formation of solid solution series like siderite-smithsonite, siderite-magnesite, and siderite-rhodochrosite. \u003c\/p\u003e \u003cp\u003eWith a Mohs hardness ranging from 3.75 to 4.25 and a specific gravity of 3.96, siderite exhibits a white streak and displays either a vitreous or pearly luster.\u003cbr\u003e\u003c\/p\u003e \u003cp class=\"MsoNormal\"\u003e\u003cb\u003eAzurite\u003c\/b\u003e, also referred to as Azure spar, is a soft, vibrant blue copper mineral formed through the weathering of copper ore deposits. In the early 19th century, it was commonly called chessylite, named after its type locality in Chessy-les-Mines, near Lyon, France. This mineral, characterized by the basic carbonate formula Cu3(CO3)2(OH)2, has a long history, having been noted in ancient texts such as Pliny the Elder's Natural History, where it was identified by the Greek term kuanos, meaning \"deep blue,\" and the Latin term caeruleum. The blue hue of azurite is attributed to the presence of copper ions.\u003c\/p\u003e \u003c\/div\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"45 37 18 20","offer_id":49979525857556,"sku":"45 37 18 20","price":595.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250113_114133.jpg?v=1779200214"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/collections\/Screenshot_2024-11-23_094928_f5ec8320-6768-4240-a7ac-1062e4dcfaf6.png?v=1780545705","url":"https:\/\/crystals2collect.com\/collections\/nitrates.oembed?page=6","provider":"Crystals2Collect ","version":"1.0","type":"link"}