{"title":"SULFIDES (SELENIDES, TELLURIDES, ARSENIDES, ANTIMONIDES, BISMUTHIDES)","description":"\u003cp\u003eSulfides (Sulphides, British English) are compounds that include sulfur. They can be categorized into three types: inorganic sulfides, organic sulfides (often referred to as thioethers), and phosphine sulfides. In the UK, \"sulphide\" is the preferred spelling. Essentially, a sulfide is formed when sulfur combines with a more electropositive element, and \"sulphide\" can also refer to thio-ethers.\u003c\/p\u003e\n\u003cp\u003eThis important class includes most of the ore minerals. The similar but rarer\u003cspan\u003e \u003c\/span\u003e\u003cspan id=\"ref619378\"\u003e\u003c\/span\u003esulfarsenides are grouped here as well. Sulfide minerals consist of one or more metals combined with sulfur; sulfarsenides contain\u003cspan\u003e arsenic \u003c\/span\u003ereplacing some of the\u003cspan\u003e sulfur. \u003c\/span\u003eSulfides are generally\u003cspan\u003e opaque \u003c\/span\u003eand exhibit distinguishing colours and streaks. (Streak the colour of a mineral’s powder.) The nonopaque varieties (e.g.,\u003cspan\u003e cinnabar, realgar \u003c\/span\u003eand\u003cspan\u003e orpiment\u003c\/span\u003e) possess high refractive indices, transmitting light only on the thin edges of a specimen.\u003c\/p\u003e\n\u003cp\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\u003c\/p\u003e","products":[{"product_id":"antimonite-stibnite-crystals-minerals-crystals2collect-rocks","title":"ANTIMONITE-STIBNITE, PRC (miniature)","description":"\u003cp\u003eStibnite, also known as antimonite, is a sulfide mineral represented by the chemical formula Sb2S3. This soft, gray substance crystallizes within an orthorhombic space group and serves as the primary source of the metalloid antimony. Its name originates from the Greek word στίβι (stibi) and the Latin term stibium, which were historically used to refer to both the mineral and the element antimony.\u003cbr\u003e\u003cbr\u003eMiniature.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"25 23 19 25 \/ PRC \/ 959-08","offer_id":49739999183124,"sku":"959-08","price":65.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2785.jpg?v=1771215925"},{"product_id":"aragonite-2-quartz-dolomite-pyrite-crystals-minerals-crystals2collect-rocks","title":"ARAGONITE with QUARTZ, DOLOMITE and PYRITE, CAVNIC, RUMANIA (large cabinet)","description":"\u003cp\u003eA complex and beautiful specimen with thousands of details. Hard to catch on photo.\u003cbr\u003e\u003cbr\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\n\u003cp\u003eThe crystal structure of aragonite is distinct from that of calcite, leading to a unique crystal morphology characterized by an orthorhombic system and acicular crystals.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003ePyrite\u003c\/strong\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\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eQuartz\u003c\/strong\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","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"130 65 130 \/ CAVNIC, RUMANIA \/ 813-1","offer_id":52702116249876,"sku":"813-1","price":335.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2468_fd58ac8f-2e89-4fb5-9f9a-4f0c027682c7.jpg?v=1771216219"},{"product_id":"barite-2-baryte-calcite-sphalerite-crystals-minerals-crystals2collect-rocks","title":"BARYTE,  CALCITE and SPHALERITE, MOROCCO (LARGE CABINET)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eBaryte,\u003c\/b\u003e also known as barite or barytes, is a mineral composed of barium sulfate (BaSO4). Typically appearing white or colorless, barite serves as the primary source of barium. The baryte group includes barite, celestine (strontium sulfate), anglesite (lead sulfate), and anhydrite (calcium sulfate), with barite and celestine forming a solid solution represented as (Ba,Sr)SO4.\u003cbr\u003e\u003cb\u003e\u003cbr\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\u003c\/p\u003e\n\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. This calcite turns yellow in long wave UV.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"125 100 90 1184 \/ Morocco \/ 107-30","offer_id":49740000231700,"sku":"107-30","price":1135.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250110_120007.jpg?v=1772791664"},{"product_id":"calcite-12-crystals-minerals-crystals2collect-rocks-pyrite","title":"CALCITE with PYRITE, FRENCH ALPS, FRANCE (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003ePyrite\u003c\/strong\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\u003cstrong\u003eCalcite\u003c\/strong\u003e 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","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"65 55 25 76 \/ FRENCH ALPS, FRANCE \/ 957-08","offer_id":49740001968404,"sku":"957-08","price":95.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2712.jpg?v=1779189422"},{"product_id":"chalcocite-crystals-minerals-rocks-crystals2collect","title":"CHALCOCITE CRYSTALS, DZEZKAZGAN MINE, DZEZKAZGAN OBLAST, KAZACHSTAN (RARE) (small cabinet)","description":"\u003cp\u003eChalcocite, a significant copper ore mineral, is composed of copper(I) sulfide (Cu2S). This mineral appears opaque and ranges in color from dark gray to black, exhibiting a metallic sheen. With a hardness rating of 2.5 to 3 on the Mohs scale, it belongs to the monoclinic crystal system. The name chalcocite is derived from the Greek word \"khalkos,\" which translates to \"copper.\" It is also referred to as redruthite, vitreous copper, or copper-glance.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"80 40 40 114 \/ DZEZKAZGAN MINE, DZEZKAZGAN OBLAST, KAZACHSTAN \/ 665-08","offer_id":49740002754836,"sku":"665-08","price":995.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2443.jpg?v=1779189869"},{"product_id":"chalcopyrite-1-sphalerite-quartz-crystals-minerals-rocks-crystals2collect","title":"CHALCOPYRITE, SPHALERITE, QUARTZ,  HUARON, SAN JOSE DE HUAYLLAG DISTR. CERRO DE PASCO, PERU(small 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\n\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\n\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\n\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","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"75 60 60 234 \/ HUARON, SAN JOSE DE HUAYLLAG DISTR. CERRO DE PASCO, PERU \/ 906-23","offer_id":49740002787604,"sku":"906-23","price":685.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241227_091954.jpg?v=1779189884"},{"product_id":"chalcopyrite-10-pyrite-quartz-crystals-minerals-rocks-crystals2collect","title":"CHALCOPYRITE, PYRITE with NEEDLE QUARTZ, 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\n\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\n\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. Rare specimen 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":"70 41 53 147 \/ SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU \/ 800-32","offer_id":49740002918676,"sku":"800-32","price":855.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250113_100002.jpg?v=1779189914"},{"product_id":"chalcopyrite-11-pyrite-quartz-crystals-minerals-rocks-crystals2collect","title":"CHALCOPYRITE, PYRITE, 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\n\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\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\u003c\/p\u003e\n\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\n\u003cp class=\"MsoNormal\"\u003ePrivate Peruvian Collection. 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":"70 50 50 144 \/ SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU \/ 801-32","offer_id":49740002984212,"sku":"801-32","price":565.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250113_075514.jpg?v=1779189960"},{"product_id":"chalcopyrite-13-pyrite-chalcopyrite-quartz-crystals-minerals-rocks-crystals2collect","title":"CHALCOPYRITE, PYRITE, 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\n\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\n\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\n\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 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":"80 60 55 145 \/ SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU \/ 803-23","offer_id":49740003049748,"sku":"803-23","price":655.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241226_084958.jpg?v=1779190008"},{"product_id":"chalcopyrite-14-rhodochrosite-sphalerite-quartz-crystals-minerals-rocks-crystals2collect","title":"RHODOCHROSITE, CHALCOPYRITE, QUARTZ, SPHALERITE, 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\n\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\n\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\n\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","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"73 60 40 186 \/ SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU \/ 804-23","offer_id":52702111727892,"sku":"804-23","price":645.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241227_092142.jpg?v=1779190040"},{"product_id":"chalcopyrite-2-quartz-manganoan-manganocalcite-crystals-minerals-rocks-crystals2collect","title":"CHALCOPYRITE, QUARTZ, MANGANOCALCITE 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\n\u003cp\u003e\u003cstrong\u003eManganoan calcite\u003c\/strong\u003e, also known as \u003cstrong\u003emanganocalcite\u003c\/strong\u003e, 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 Å tiavnica 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\n\u003cp\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\n\u003cp\u003ePrivate Peruvian Collection. 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":"115 38 60 \/ HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU \/ 652-27","offer_id":52702111662356,"sku":"652-27","price":855.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3647.jpg?v=1779190085"},{"product_id":"chalcopyrite-3-sphalerite-quartz-crystals-minerals-rocks-crystals2collect","title":"CHALCOPYRITE, SPHALERITE, QUARTZ  CABINET, 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\n\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\u003e\u003c\/p\u003e\n\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\n\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 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":"95 40 80  383 \/ HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU \/ 653-21","offer_id":52702111596820,"sku":"653-21","price":820.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241230_101924.jpg?v=1779190145"},{"product_id":"chalcopyrite-6-crystals-minerals-rocks-crystals2collectgoethite-sphalerite","title":"CHALCOPYRITE with GOETHITE and a single SPHALERITE CRYSTAL SMALL CABINET","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eChalcopyrite\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\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\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGoethite\u003c\/strong\u003e is a mineral belonging to the diaspore group, characterized as iron(III) oxide-hydroxide, specifically in its α-polymorph form. It is commonly found in soil and low-temperature environments, including sedimentary contexts. Historically recognized for its use as a pigment, particularly brown ochre, goethite has been identified in ancient paint samples from the Lascaux caves in France. The mineral was first documented in 1806, based on specimens from the Hollertszug Mine in Herdorf, Germany, and is named in honor of the German polymath Johann Wolfgang von Goethe.\u003c\/p\u003e\n\u003cp\u003eGoethite is composed of iron oxyhydroxide with ferric iron as its primary element. It serves as a significant component of rust and bog iron ore. The mineral exhibits a hardness of 5.0 to 5.5 on the Mohs Scale and has a specific gravity ranging from 3.3 to 4.3. While it typically forms massive structures, goethite can also appear as prismatic needle-like crystals, often referred to as \"needle ironstone.\"\u003cbr\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"62 30 25 89 \/ HUARON, SAN JOSE DE HUAYLLAG DISTR. CERRO DE PASCO, PERU \/ 0781-19","offer_id":49740003377428,"sku":"0781-19","price":575.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250128_132515.jpg?v=1779190178"},{"product_id":"chalcopyrite-7-sphalerite-pyrite-quartz-crystals-minerals-rocks-crystals2collect","title":"CHALCOPYRITE, SPHALERITE, PYRITE, QUARTZ  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\n\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\n\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\n\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\u003c\/p\u003e\n\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\n\u003cp class=\"MsoNormal\"\u003ePrivate Peruvian Collection. Very rare as the mines are closed for decades. Former Steve Moon Collection.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"72 45 40 120 \/ SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU \/ 797-23","offer_id":49740003410196,"sku":"797-23","price":595.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241227_081823.jpg?v=1779190194"},{"product_id":"chalcopyrite-9-quartz-crystals-minerals-rocks-crystals2collect","title":"CHALCOPYRITE WITH NEEDLE QUARTZ, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU  SMALL CABINET","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eChalcopyrite\u003c\/strong\u003e is 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\n\u003cp class=\"MsoNormal\"\u003eFrom private Peruvian collection. Very hard to find as the mines are closed for decades.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eFormer Steve Moon Collection\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"60 55 50  125 \/ SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU \/ 799-25","offer_id":49740003508500,"sku":"799-25","price":500.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3495.jpg?v=1779190223"},{"product_id":"cubanite-3-crystals-minerals-rocks-crystals2collect","title":"CUBANITE, HENDERSON  #2 MINE CHIBOUGAMAU QUEBEC CANADA (THUMBNAIL)","description":"\u003cp\u003e\u003cstrong\u003eCubanite\u003c\/strong\u003e is a copper iron sulfide mineral, typically found as a minor alteration mineral within magmatic sulfide deposits. Its chemical formula is CuFe2S3, and it exhibits a bronze to brass-yellow coloration. On the Mohs hardness scale, cubanite ranks between 3.5 and 4 and possesses an orthorhombic crystal system. While chemically akin to chalcopyrite, cubanite is less prevalent due to its specific crystallization requirements. It is primarily found in high-temperature hydrothermal mineral deposits, often associated with pyrrhotite and pentlandite, and forms through the exsolution process from chalcopyrite at temperatures ranging from 200 to 210 °C. If subjected to temperatures exceeding 210 °C, cubanite converts to isocubanite, losing its magnetic properties and orthorhombic structure in the process. This transformation is irreversible upon cooling. Cubanite has also been detected in chondrites and dust grain samples, enhancing the accuracy of copper isotope analysis.\u003c\/p\u003e\n\u003cp\u003eThe name \"cubanite\" derives from the Spanish term \"Cubano,\" meaning Cuban, combined with the suffix \"-ite,\" commonly used for minerals. It was first identified in 1843 in the Mayarí-Baracoa Belt of Holguín Province, Cuba, and is occasionally referred to as barracanite in certain literature.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"22 14 6 \/ HENDERSON  #2 MINE CHIBOUGAMAU QUEBEC CANADA \/ 0876C-13","offer_id":52702108746004,"sku":"0876C","price":75.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250417_105529.jpg?v=1779190738"},{"product_id":"erythrite-crystals-minerals-rocks-crystals2collect","title":"ERYTHRITE, MOUNT COBALT MINE QUEENSLAND AUSTRALIA (cabinet)","description":"\u003cp\u003e\u003cstrong\u003eErythrite\u003c\/strong\u003e, commonly referred to as red cobalt, is a secondary mineral composed of hydrated cobalt arsenate, represented by the formula Co3(AsO4)2•8H2O. It forms a complete series with annabergite, which has the chemical formula Ni3(AsO4)2•8H2O, or nickel arsenate, following the general formula (Co,Ni)3(AsO4)2•8H2O.\u003cbr\u003eThe crystals on this specimen have some damage as they are very fragile. On the other hand, it is rich on this mineral.  \u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"100 100 30 \/ MOUNT COBALT MINE QUEENSLAND AUSTRALIA \/ 502-10","offer_id":49750868918548,"sku":"502-10","price":345.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2725.jpg?v=1779190957"},{"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\n\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 \/ Cerro de Pasco Pasco Prov. Pasco PERU \/ 612-03","offer_id":49740010062100,"sku":"612-03","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":"galena-2-crystals-minerals-rocks-crystals2collect","title":"GALENA with QUARTZ, HUARON, SAN JOSE DE HUAYLLAG DISTR. CERRO DE PASCO, PERU (small cabinet)","description":"\u003cp\u003e\u003cstrong\u003eGalena\u003c\/strong\u003e, known as lead glance, is the natural mineral form of lead(II) sulfide (PbS) and serves as the primary ore for lead, as well as a significant source of silver. \u003c\/p\u003e\n\u003cp\u003eThis mineral is among the most prevalent and widely found sulfide minerals, crystallizing in a cubic system and frequently exhibiting octahedral shapes. Galena is commonly found in association with other minerals such as sphalerite, calcite, and fluorite.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\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 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":"60 35 50 158 \/ HUARON, SAN JOSE DE HUAYLLAG DISTR. CERRO DE PASCO, PERU \/ 721-23","offer_id":49740010258708,"sku":"721-23","price":295.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241226_084844.jpg?v=1779191427"},{"product_id":"inesite-crystals-rocks-minerals-crystals2collect-pyrite-quartz","title":"INESITE, PYRITE, QUARTZ, FENGJIASHENG MINE, DAYE, HUBEI, PRC (LARGE CABINET)","description":"\u003cp\u003e\u003cstrong\u003e Inesite\u003c\/strong\u003e is a hydrous calcium manganese silicate mineral characterized by the chemical formula Ca2Mn7Si10O28(OH)2•5(H2O). This inosilicate mineral crystallizes in a triclinic system and exhibits a Mohs hardness ranging from 5.5 to 6, along with a specific gravity of 3.0. Its name is derived from the Greek word Ίνες (ines), meaning \"fibers,\" which reflects its distinctive color and habit. Inesite is typically found in hydrothermal replacement deposits associated with manganese-rich metamorphic rocks and serpentines. It was first identified in 1887 at the Hilfe Gottes Mine in Dillenburg, Hesse, Germany, and has since been located in several other significant sites.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\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\n\u003cp\u003e \u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"160 110 100 1803 \/ FENGJIASHENG MINE, DAYE, HUBEI, PRC \/ 848-33","offer_id":49740012749076,"sku":"848-33","price":180.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250508_171619.jpg?v=1779192332"},{"product_id":"mimetite-8-crystals-rocks-minerals-crystals2collect","title":"MIMETITE, MINERALES MEXICANOS MINE, LEVEL 14, SANTA EULALIA, CHIHUAHUA, MEXICO (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eMimetite\u003c\/b\u003e is a mineral composed of lead arsenate chloride (Pb5(AsO4)3Cl) that typically forms as a secondary mineral in lead deposits through the oxidation of galena and arsenopyrite. Its name is derived from the Greek word Μιμητής mimetes, which translates to \"imitator,\" highlighting its similarity to the mineral pyromorphite. This similarity is significant, as mimetite is part of a mineral series that includes both pyromorphite (Pb5(PO4)3Cl) and vanadinite (Pb5(VO4)3Cl). Noteworthy locations for mimetite include Mapimi in Durango, Mexico, and Tsumeb in Namibia.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"85 40 70 140 \/ MINERALES MEXICANOS MINE, LEVEL 14, SANTA EULALIA, CHIHUAHUA, MEXICO \/ 765-23","offer_id":49740015436052,"sku":"765-23","price":315.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241227_133401.jpg?v=1779193042"},{"product_id":"orpiment-crystals-rocks-minerals-crystals2collect-realgar","title":"ORPIMENT, Gold Bar Mine, Eureka County, Nevada, USA (miniature)","description":"\u003cp\u003e\u003cstrong\u003eOrpiment\u003c\/strong\u003e, commonly referred to as \"yellow arsenic blende,\" is a vibrant orange-yellow arsenic sulfide mineral with the chemical formula As2S3. It typically occurs in volcanic fumaroles, low-temperature hydrothermal veins, and hot springs, often forming through sublimation processes. The name \"orpiment\" is derived from the Latin term auripigmentum, which combines aurum, meaning \"gold,\" and pigmentum, meaning \"pigment,\" reflecting its striking yellow hue. Historically, orpiment was extensively utilized in art, medicine, and various other fields.\u003c\/p\u003e\n\u003cp\u003eThe etymology of orpiment traces back to the Latin auripigmentum, which not only highlights its color but also the ancient belief that it contained gold, a notion referenced by Pliny in the first century AD. In Greek, orpiment is known as arsenikon, stemming from arsenikos, which translates to \"male,\" based on the ancient belief in the gender of metals. This term was documented by Theophrastus in the fourth century BC. In Chinese, orpiment is called Ci-Huang, meaning \"female yellow,\" while in Persian, it is referred to as zarnikh, derived from \"zar,\" which means gold.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"38 30 18 22 \/ Gold Bar Mine, Eureka County, Nevada, USA \/ 956-08","offer_id":49740016451860,"sku":"956-08","price":58.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250322_104552.jpg?v=1779193364"},{"product_id":"pyrite-7-crystals-rocks-minerals-crystals2collect-quartz-crystals-rocks-minerals-crystals2collect","title":"PYRITE on QUARTZ, LLALLAGUA, BOLIVIA (cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003ePyrite\u003c\/strong\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\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eQuartz \u003c\/strong\u003eis 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","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"90 87 41 \/ LLALLAGUA, BOLIVIA \/ 947-5","offer_id":52702095081748,"sku":"947-5","price":168.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2490_3d0d7660-f255-4efe-981d-2b3d5307be4d.jpg?v=1779193462"},{"product_id":"pyrite-8-crystals-rocks-minerals-crystals2collect","title":"PYRITE, CAMEROS BASIN NAVAJUN SPAIN (cabinet)","description":"\u003cp class=\"MsoNormal\"\u003ePyrite, commonly referred to as fool's gold, is an iron sulphide with the chemical formula FeS2, also known as iron (II) disulphide. It is the most prevalent sulphide mineral found in nature. The crystal is approx 30 x 30 x 30 mm.\u003cbr\u003e\u003cbr\u003eThe crystal is fixated to the matrix to avoid damage.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"100 90 60 \/ CAMEROS BASIN NAVAJUN SPAIN \/ 123-12","offer_id":52702095048980,"sku":"123-12","price":265.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2591_e20728b1-e794-4a13-8a3d-64ea67b754cb.jpg?v=1779193537"},{"product_id":"pyrite-1","title":"PYRITE with CHALCOPYRITE AND QUARTZ, ANIMIN MINE, HUARON, PERU (miniature)","description":"\u003cp\u003e\u003cstrong\u003eChalcopyrite\u003c\/strong\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\n\u003cp\u003e\u003cstrong\u003ePyrite\u003c\/strong\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\u003ePrivate Peruvian Collection. Very rare as the mines closed decades ago.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"60 40 30 25 \/ ANIMIN MINE, HUARON, PERU \/ 880-13","offer_id":49740017172756,"sku":"880-13","price":295.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250422_175345.jpg?v=1779193550"},{"product_id":"pyrite-2","title":"PYRITE, LLALLAGUA, BOLIVIA (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003ePyrite\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e, commonly referred to as fool's gold, is an iron sulphide with the chemical formula FeS2, also known as iron (II) disulphide. It is the most prevalent sulphide mineral found in nature.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"70 60 45 264 \/ LLALLAGUA, BOLIVIA \/ 915-04","offer_id":49740017205524,"sku":"915-04","price":195.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250123_131107.jpg?v=1779193590"},{"product_id":"pyrite-3-crystals-rocks-minerals-crystals2collect-galena-quartz","title":"PYRITE, GALENA, QUARTZ, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV PERU (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003ePyrite\u003c\/b\u003e, commonly referred to as fool's gold, is an iron sulphide with the chemical formula FeS2, also known as iron (II) disulphide. It is the most prevalent sulphide mineral found in nature.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGalena, \u003c\/strong\u003eknown as lead glance, is the natural mineral variant of lead(II) sulphide (PbS) and serves as the primary ore for lead, as well as a significant source of silver. \u003c\/p\u003e\n\u003cp\u003eThis mineral is among the most prevalent and widely found sulphide minerals, crystallizing in the cubic system and frequently exhibiting octahedral shapes. Galena is commonly found in association with other minerals such as sphalerite, calcite, and fluorite.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\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 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":"80.2 60.7 24.9  126 \/ SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV PERU \/ 1715-02","offer_id":49740017238292,"sku":"1715-02","price":825.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241231_182617.jpg?v=1779193613"},{"product_id":"pyrite-4-crystals-rocks-minerals-crystals2collect-marcasite-chalcopyrite","title":"PYRITE, SICILY, ITALY (small cabinet)","description":"\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":"80 50 30 278 \/ SICILY, ITALY \/ 50-32","offer_id":52702095016212,"sku":"50-32","price":195.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250113_100326.jpg?v=1779193650"},{"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\n\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\n\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\n\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 Å tiavnica 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\n\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 \/ SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU \/ 808-16","offer_id":49740017303828,"sku":"808-16","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":"pyrite-6-crystals-rocks-minerals-crystals2collect-marcasite-chalcopyrite","title":"PYRITE, NAVAJUN, LA RIOJA, SPAIN (cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003ePyrite\u003c\/strong\u003e, commonly referred to as fool's gold, is an iron sulphide with the chemical formula FeS2, also known as iron (II) disulphide. It is the most prevalent sulphide mineral found in nature.\u003cbr\u003e\u003cbr\u003eOne crystal is stabilised on this specimen.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"110 90 90 \/ NAVAJUN, LA RIOJA, SPAIN \/ 820","offer_id":52702094983444,"sku":"820","price":395.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2933.jpg?v=1779193710"},{"product_id":"pyromorphite-1-galena-quartz-crystals-rocks-minerals-crystals2collect","title":"PYROMORPHITE, GALENA and QUARTZ, PCHELOYAD MINE, MOMCHILGRAD, KARDZHALI, BULGARIA (miniature)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003ePyromorphite\u003c\/strong\u003e is a mineral consisting of lead chlorophosphate, represented by the formula Pb5(PO4)3Cl, and can be found in sufficient quantities to be extracted as a lead ore. It typically forms crystals that exhibit a hexagonal prism shape, often capped with basal planes and occasionally featuring narrow hexagonal pyramid faces. Barrel-shaped crystals are also relatively common, along with globular and reniform aggregates. As a member of the apatite mineral group, pyromorphite closely resembles mimetite (Pb5(AsO4)3Cl) and vanadinite (Pb5(VO4)3Cl) in both physical and chemical properties, making it challenging to differentiate among them without chemical analysis.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eGalena, also known as lead glance, is the natural mineral form of lead(II sulfide (PbS). It serves as the primary ore of lead and is a significant source of silver.\u003c\/p\u003e\n\u003cp\u003eGalena is one of the most and widely distributed sulfide minerals. It crystall in the cubic crystal system, frequently exhibiting octahedral forms. It is commonly found in association with the minerals sphalerite, calcite, and fluorite.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eMINIATURE - MINIATURE - MINIATURE\u003c\/strong\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"50 45 25  44 \/ PCHELOYAD MINE, MOMCHILGRAD, KARDZHALI, BULGARIA \/ 872-29","offer_id":49740017434900,"sku":"872-29","price":465.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3564.jpg?v=1779193826"},{"product_id":"pyrrhotite-crystals-rocks-minerals-crystals2collect","title":"PYRRHOTITE, MORO VELHO OURO PRETO, BRAZIL (small cabinet)","description":"\u003cp\u003e\u003cstrong\u003ePyrrhotite\u003c\/strong\u003e, derived from the Greek word for \"flame-colored,\" is an uncommon iron sulfide mineral represented by the formula Fe(1-x)S, where x ranges from 0 to 0.125. This mineral is a nonstoichiometric form of FeS, commonly referred to as troilite. Often called magnetic pyrite due to its color resemblance to pyrite, pyrrhotite exhibits weak magnetism that diminishes with increasing iron content, while troilite remains non-magnetic. Typically, pyrrhotite appears tabular with a brassy or bronze hue and a metallic sheen. It is commonly found in association with mafic igneous rocks such as norites and can form from the alteration of pyrite during metamorphic events.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"80 65 40 372 \/ MORO VELHO OURO PRETO, BRAZIL \/ 216-08","offer_id":52702094754068,"sku":"216-08","price":355.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2733.jpg?v=1779193950"},{"product_id":"quartz-sphalerite-chalcopyrite","title":"QUARTZ with SPHALERITE, CHALCOPYRITE, PYRITE and MANGANOCALCITE (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\n\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\n\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\n\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\u003c\/p\u003e\n\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\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":"95 55 55 161 \/ HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU \/ 747-21","offer_id":49740017795348,"sku":"747-21","price":775.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241230_142152.jpg?v=1779194055"},{"product_id":"quartz-15","title":"CHALCOPYRITE QUARTZ, HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, 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.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePrivate Peruvian Collection.\u003c\/strong\u003e 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 40 75 72 \/ HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU \/ 748-41","offer_id":49740017860884,"sku":"748-41","price":585.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250609_142225.jpg?v=1779194077"},{"product_id":"quartz-16-pyrite-crystals-rocks-minerals-crystals2collect","title":"QUARTZ with PYRITE, HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU (small cabinet)","description":"\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\n\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","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"65 35 50 75 \/ HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU \/ 752-23","offer_id":49740017893652,"sku":"752-23","price":365.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241227_081431.jpg?v=1779194095"},{"product_id":"quartz-17-sphalerite-pyrite-chalcopyrite-crystals-rocks-minerals-crystals2collect","title":"QUARTZ,  SPHALERITE AND PYRITE, HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, 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\n\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\n\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 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":"95 40 72  184 \/ HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU \/ 753-21","offer_id":49740017926420,"sku":"753-21","price":655.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241230_143400.jpg?v=1779194104"},{"product_id":"realgar-1-crystals-rocks-minerals-crystals2collect-oripigment","title":"REALGAR with CALCITE (miniature), Bonanza Queen Mine Deer Creek Silverton Mining District Snohomish County Washington USA","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eRealgar,\u003c\/b\u003e a sulfide with the chemical formula α-As4S4. This soft and sectile mineral typically forms in monoclinic crystals or appears in granular, compact, or powdery forms, often found alongside the related mineral orpiment (As2S3). Characterized by its orange-red hue, realgar melts at 320 °C and burns with a bluish flame, emitting AS and S fumes. It has a Mohs hardness ranging from 1.5 to 2 and a specific gravity of 3.5, with an orange streak. Realgar is trimorphous, existing in forms such as pararealgar and bonazziite.\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"62 50 45 190 \/ Bonanza Queen Mine Deer Creek Silverton Mining District Snohomish County Washington USA \/ 867-02","offer_id":49740018745620,"sku":"867-02","price":195.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241231_134132.jpg?v=1779194240"},{"product_id":"realgar-2-crystals-rocks-minerals-crystals2collect-oripigment","title":"REALGAR (small cabinet) American Mine Reiter Index Mining District Snohomish County Washington USA","description":"\u003cp\u003e\u003cstrong\u003eRealgar\u003c\/strong\u003e, A sulfide with the chemical formula α-As4S4. This soft and sectile mineral typically forms in monoclinic crystals or appears in granular, compact, or powdery forms, often found alongside the related mineral orpiment (As2S3). Characterized by its orange-red hue, realgar melts at 320 °C and burns with a bluish flame, emitting As and S fumes. It has a Mohs hardness ranging from 1.5 to 2 and a specific gravity of 3.5, with an orange streak. Realgar is trimorphous, existing in forms such as pararealgar and bonazziite.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"70 50 40 184 \/ American AS Mine Reiter Index Mining District Snohomish County Washington USA \/ 871-02","offer_id":52702093443348,"sku":"871-02","price":150.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241231_134320.jpg?v=1779194264"},{"product_id":"realgar-3-crystals-rocks-minerals-crystals2collect-oripigment","title":"REALGAR, GETCHELL MINE, NEVADA, USA (large cabinet)","description":"\u003cp\u003e\u003cstrong\u003eRealgar\u003c\/strong\u003e, a sulfide with the chemical formula α-As4S4. This soft and sectile mineral typically forms in monoclinic crystals or appears in granular, compact, or powdery forms, often found alongside the related mineral orpiment (As2S3). Characterized by its orange-red hue, realgar melts at 320 °C and burns with a bluish flame, emitting As and S fumes. It has a Mohs hardness ranging from 1.5 to 2 and a specific gravity of 3.5, with an orange streak. Realgar is trimorphous, existing in forms such as pararealgar and bonazziite.\u003cbr\u003e\u003cbr\u003eDO NOT EXPOSE TO LIGHT (DESINTEGRATES)\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"165 55 113 1150 \/ GETCHELL MINE, NEVADA, USA \/ 583-28","offer_id":52702093410580,"sku":"583-28","price":295.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250131_144512.jpg?v=1779194293"},{"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\n\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\n\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\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"120 50 60 456 \/ LOS SALINAS, ICA, PERU \/ 0662A-28","offer_id":49740018942228,"sku":"0662A","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\n\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\n\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 \/ HUARON, SAN JOSE DE HUAYLLAG DISTR. CERRO DE PASCO, PERU \/ 712-4","offer_id":49740018974996,"sku":"712-4","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-14-crystals-rocks-minerals-crystals2collect-pyrite-quartz","title":"RHODOCHROSITE associated with PYRITE, QUARTZ, HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU (small cabinet) Former John Betts Collection #12168","description":"\u003cp\u003e\u003cstrong\u003eRhodochrosite\u003c\/strong\u003e is 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\u003cstrong\u003ePyrite\u003c\/strong\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\u003cstrong\u003eFormer John Betts Collection #12168\u003c\/strong\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"82 40 56 204 \/ HUARON, SAN JOSE DE HUAYLLAG DISTR. CERRO DE PASCO, PERU \/ 187-08","offer_id":49740019138836,"sku":"187","price":385.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2621.jpg?v=1779194479"},{"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\n\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\n\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\n\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 \/ HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU \/ 740-04","offer_id":49740019237140,"sku":"740-04","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":"scheelite-2-stannite-muscovite-crystals-rocks-crystals2collect-minerals","title":"SCHEELITE (3 crystals), MUSCVOVITE with STANNITE, DULING, YUNNAN, PRC (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eScheelite (3 crystals)\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e a mineral composed of calcium tungstate with the formula CaWO4, serves as a significant source of tungsten, also known as wolfram.\u003c\/span\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStannite\u003c\/strong\u003e is a sulfide mineral with the chemical formula Cu2FeSnS4, serving as a tin ore. Typically, it occurs alongside other sulfide minerals within tin veins, notably in locations such as Cornwall, England; Zeehan, Tasmania; and Bolivia. As a member of the chalcopyrite group of sulfides, stannite exhibits tetragonal symmetry in its crystal structure.\u003cbr\u003e\u003cbr\u003e\u003cb\u003e\u003cspan lang=\"EN-AU\"\u003eMuscovite,\u003c\/span\u003e\u003c\/b\u003e\u003cspan lang=\"EN-AU\"\u003e commonly referred to as common mica, isinglass, or potash mica, is a hydrated phyllosilicate mineral composed of aluminum and potassium, represented by the chemical formula KAl2(AlSi3O10)(F,OH)2, or (KF)2(Al2O3)3(SiO2)6(H2O). This mineral is characterized by its exceptional basal cleavage, allowing it to produce extremely thin and often highly flexible sheets.\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"75 50 60 151 \/ DULING, YUNNAN, PRC \/ 850-22","offer_id":49740022415636,"sku":"850-22","price":525.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20250118_114750.jpg?v=1779194971"},{"product_id":"sphalerite-1-quartz-manganoan-mangano_calcite-crystals-rocks-crystals2collect-minerals","title":"SPHALERITE, QUARTZ, MANGANOCALCITE, PAKISTAN (small cabinet)","description":"\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 Å tiavnica 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\n\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\n\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\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"80 60 30 \/ PAKISTAN \/ 865-27","offer_id":52702085644564,"sku":"865-27","price":165.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_3624.jpg?v=1779195412"},{"product_id":"sphalerite-11-quartz-chalcopyrite-crystals-rocks-crystals2collect-minerals","title":"SPHALERITE, QUARTZ, CHALCOPYRITE, 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 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\n\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\n\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 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 55 70 418 \/ SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PROV, PERU \/ 714-21","offer_id":49740024021268,"sku":"714-21","price":970.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241230_101325.jpg?v=1779195420"},{"product_id":"sphalerite-12-baryte-barite-crystals-rocks-crystals2collect-minerals","title":"SPHALERITE and BARYTE COMBO, Elmwood Mine Carthage Smith County Tennessee USA (choc-vanilla) (small cabinet)","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eSphalerite\u003c\/strong\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\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eBaryte\u003c\/strong\u003e, also known as \u003cstrong\u003ebarite\u003c\/strong\u003e or \u003cstrong\u003ebarytes\u003c\/strong\u003e, is a mineral composed of barium sulfate (BaSO4). Typically appearing white or colorless, barite serves as the primary source of barium. The baryte group includes barite, celestine (strontium sulfate), anglesite (lead sulfate), and anhydrite (calcium sulfate), with barite and celestine forming a solid solution represented as (Ba,Sr)SO4.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"90 45 70 389 \/ 828-08 \/ Elmwood Mine Carthage Smith County Tennessee USA","offer_id":49740024054036,"sku":"828-08","price":460.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2630.jpg?v=1779195459"},{"product_id":"sphalerite-2-manganoan-mangano_calcite-pyrite-quartz-crystals-rocks-crystals2collect-minerals","title":"SPHALERITE, MANGANO CALCITE with QUARTZ and PYRITE, HUARON, SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO, PERU (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.\u003cbr\u003e\u003c\/p\u003e\n\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\n\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\n\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 Å tiavnica 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\n\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\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\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":"90 60 60  313 \/ HUARON SAN JOSE DE HUAYLLAY DISTR. CERRO DE PASCO PERU \/ 914-21","offer_id":49740024086804,"sku":"914-21","price":785.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/20241230_141625.jpg?v=1779195497"},{"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\n\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 \/ HUARON, SAN JOSE DE HUAYLLAG DISTR. CERRO DE PASCO, PERU \/ 314-41","offer_id":49740024185108,"sku":"314-41","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-5-ruby_jack-dolomite-calcite-crystals-rocks-crystals2collect-minerals","title":"SPHALERITE (RUBY JACK) associated with CALCITE and DOLOMITE, Elmwood Tennessee USA (large cabinet)","description":"\u003cp\u003eRUBY JACK associated with CALCITE and DOLOMITE\u003c\/p\u003e\n\u003cp\u003eSphalerite, 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","brand":"Crystals2Collect A.C.N 651.525.727 Pty Ltd","offers":[{"title":"140 50 100 \/ Elmwood Tennessee USA \/ 405-15","offer_id":52702084366612,"sku":"405-15","price":885.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/files\/MIN_2573.jpg?v=1779195537"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/2047\/9764\/collections\/MIN_2937_f8ce4995-f3db-4cab-939b-5d34c5d985cc.jpg?v=1780545741","url":"https:\/\/crystals2collect.com\/collections\/sulfides.oembed?page=5","provider":"Crystals2Collect ","version":"1.0","type":"link"}