Cadmium carbonate
| Otavite | |
|---|---|
Otavite, Tsumeb, Oshikoto Region, Namibia
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| General | |
| Category | Carbonate minerals |
|
Formula (repeating unit) |
CdCO3 |
| Strunz classification | 5.AB.05 |
| Crystal system | Trigonal |
| Crystal class | Hexagonal scalenohedral (3m) H-M symbol: (3 2/m) |
| Space group | R3c |
Otavite is a rare cadmium carbonate mineral with the formula CdCO3. Otavite crystallizes in the trigonal system and forms encrustations and small scalenohedral crystals that have a pearly to adamantine luster. The color is white to reddish to yellow brown. Its Mohs hardness is 3.5 to 4 and the specific gravity is 5.04. Associated minerals include azurite, calcite, malachite, and smithsonite.
It was first described in 1906 from the Tsumeb district near Otavi, Namibia.
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