Cadmoselite
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.
| Cadmoselite | |
|---|---|
Cadmoselite from the type locality: Ust' Uyok Deposit, Turan District, Tuva Republic, Russian Federation | |
| General | |
| Category | Mineral |
| Formula (repeating unit) | CdSe |
| IMA symbol | Cds |
| Identification | |
| Formula mass | 191.37 |
| Color | Black to pale grey |
| Luster | Adamantine – Resinous |
| Streak | Black |
| Diaphaneity | Translucent to Opaque |
| Specific gravity | 5.47 |
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.
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