| Otavite | |
| Category: | Carbonate minerals |
| Formula: | CdCO3 |
| Imasymbol: | Ota[1] |
| Strunz: | 5.AB.05 |
| System: | Trigonal |
| Class: | Hexagonal scalenohedral (m) H-M symbol: (2/m) |
| Symmetry: | Rc |
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.