| Cobaltite | |
|---|---|
 Cobaltite from Sweden | |
| General | |
| Category | Sulfide mineral |
| Formula (repeating unit) | CoAsS |
| IMA symbol | Cbt[1] |
| Strunz classification | 2.EB.25 |
| Crystal system | Orthorhombic |
| Crystal class | Pyramidal (mm2) (same H-M symbol) |
| Space group | Pc21b |
| Unit cell | a = 5.582 Å, b = 5.582 Å, c = 5.582 Å; Z = 4 |
| Identification | |
| Color | Reddish silver white, violet steel gray to black |
| Crystal habit | Granular to massive, rarely as striated crystals, pseudocubic. |
| Twinning | About [111] creating pseudo-cubic forms and striations |
| Cleavage | Perfect on {001} |
| Fracture | Uneven |
| Tenacity | Brittle |
| Mohs scale hardness | 5.5 |
| Luster | Metallic |
| Streak | Grayish-black |
| Diaphaneity | Opaque |
| Density | 6.33 g/cm3 |
| References | [2][3][4][5] |
Cobaltite is an arsenide and sulfide mineral with the mineral formula CoAsS. It is the naming mineral of the cobaltite group of minerals, whose members structurally resemble pyrite (FeS2).
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ Mineralienatlas
- ^ http://rruff.geo.arizona.edu/doclib/hom/cobaltite.pdf Mineral Handbook
- ^ http://webmineral.com/data/Cobaltite.shtml Webmineral data
- ^ https://www.corfo.cl/sites/Satellite?blobcol=urldata&blobkey=id&blobtable=MungoBlobs&blobwhere=1475166619420&ssbinary=true Archived 2020-07-22 at the Wayback Machine Corfo Report