# Cadmoselite

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> Source: https://en.wikipedia.org/wiki/Cadmoselite
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{{Short description|Cadmium selenide mineral}}
{{Infobox mineral
| name        = Cadmoselite
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| image       = Cadmoselite.jpg
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| caption     = Cadmoselite from the type locality: Ust' Uyok Deposit, Turan District, Tuva Republic, Russian Federation
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| formula     = CdSe
| IMAsymbol   = Cds
| molweight   = 191.37
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| color       = Black to pale grey
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| luster      = Adamantine – Resinous
| streak      = Black
| diaphaneity = Translucent to Opaque
| gravity     = 5.47
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'''Cadmoselite''' is a rare [cadmium selenide](/source/cadmium_selenide) mineral with [chemical formula](/source/chemical_formula) CdSe. Cadmoselite crystallizes in the [hexagonal](/source/Hexagonal_(crystal_system)) system and occurs as black to pale grey opaque crystals and grains.<ref name=Handbook>http://rruff.geo.arizona.edu/doclib/hom/cadmoselite.pdf Handbook of Mineralogy</ref><ref name=Webmin>http://webmineral.com/data/Cadmoselite.shtml Webmineral data</ref>

It was first described in 1957 for an occurrence in [Tuva](/source/Tuva). The mineral occurs as interstitial grains in [sandstone](/source/sandstone) formed under [reducing](/source/Redox) [alkaline](/source/alkaline) [diagenetic](/source/diagenesis) conditions.<ref name=Handbook/><ref name=Webmin/>

==References==
{{Reflist}}
*Emsley, John. ''Nature's Building Blocks.'' Oxford, 2001. {{ISBN|0-19-850341-5}}

Category:Cadmium minerals
Category:Selenide minerals
Category:Hexagonal minerals
Category:Minerals in space group 186

{{Mineral-stub}}

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Adapted from the Wikipedia article [Cadmoselite](https://en.wikipedia.org/wiki/Cadmoselite) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Cadmoselite?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.