Cadmoindite
| Cadmoindite | |
|---|---|
|
Cadmoindite, from Kudriavy Volcano, Far Eastern Region, Russian Federation | |
| General | |
| Category |
Sulfide mineral Thiospinel group Spinel structural group |
| Formula (repeating unit) | CdIn2S4 |
| Strunz classification | 02.DA.05 |
| Crystal symmetry |
Isometric hexoctahedral H-M symbol (4/m 3 2/m) space group Fd3m |
| Unit cell | a = 10.81 Å; Z = 8 |
| Identification | |
| Formula mass | 470.32 g |
| Color | Black to dark brown |
| Crystal habit | Microscopic octahedral crystals |
| Crystal system | Cubic |
| Fracture | Conchoidal |
| Luster | Adamantine |
| Diaphaneity | translucent |
| Optical properties | Isotropic |
| References | [1] [2] |
Cadmoindite (CdIn2S4) is a rare cadmium indium sulfide mineral discovered in Siberia around the vent of a high-temperature (450–600 °C) fumarole at the Kudriavy volcano, Iturup Island in the Kuril Islands. It has also been reported from the Kateřina Coal Mine in Bohemia, Czech Republic.[2]