Chemistry:Cadmoselite

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Cadmoselite
Cadmoselite.jpg
Cadmoselite from the type locality: Ust' Uyok Deposit, Turan District, Tuva Republic, Russian Federation
General
CategoryMineral
Formula
(repeating unit)
CdSe
Identification
Formula mass191.37
ColorBlack to pale grey
|re|er}}Adamantine – Resinous
StreakBlack
DiaphaneityTranslucent to Opaque
Specific gravity5.47

Cadmoselite is a rare cadmium selenide mineral with chemical formula CdSe. Cadmoselite crystallizes in the hexagonal system and occurs as black to pale grey opaque crystals and grains.[1][2]

It was first described in 1957 for an occurrence in Tuva. The mineral occurs as interstitial grains in sandstone formed under reducing alkaline diagenetic conditions.[1][2]

References

  • Emsley, John. Nature's Building Blocks. Oxford, 2001. ISBN:0-19-850341-5