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CAVANSITE with STILBITE

CAVANSITE with STILBITE

SPECIMEN NR #:622

Regular price $75.00 AUD
Regular price Sale price $75.00 AUD
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622
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Cavansite, characterized by its chemical formula of calcium vanadium silicate, is a striking deep blue hydrous mineral belonging to the phyllosilicate group. This secondary mineral is typically found in basaltic and andesitic rock formations alongside various zeolite minerals, with its distinctive blue hue attributed to the presence of vanadium ions. First identified in 1967 in Malheur County, Oregon, cavansite is considered relatively uncommon and exhibits polymorphism with the even rarer pentagonite. The mineral is predominantly located in Pune, India, and within the expansive Deccan Traps igneous province.

Stilbite refers to a group of tectosilicate minerals within the zeolite family. Originally classified as a distinct mineral species until 1997, it was redefined by the International Mineralogical Association to encompass a series, which includes the specific types of Stilbite-Ca and Stilbite-Na. Stilbite-Ca, the more prevalent variant, is a hydrous silicate composed of calcium, sodium, and aluminum, represented by the formula NaCa4(Si27Al9)O72·28(H2O). In contrast, Stilbite-Na features a higher sodium content compared to calcium. These two species appear identical to the naked eye, and the term stilbite continues to be used in contexts where detailed testing has not been conducted.

Specimen details

The numbers under "variant" are the measurements in mm and weight in grams. Where known, the origin of the specimen is mentioned. The number at the end, is the specimen number in our collection. Colours may vary, due to photography.

Care

It's important to know that many minerals can be effectively cleaned with water. However, before using any cleaning methods, such as dissolvers or ultrasound, please take the time to research online. Improper use of these techniques could potentially harm your specimen.

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Variant Variant total Quantity Price Variant total
80 40 65 142 / Wagholi Mine, Poona, INDIA / 622-16622
80 40 65 142 / Wagholi Mine, Poona, INDIA / 622-16622
$75.00/ea
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$75.00/ea $0.00