Linnaeite
Linnaeite is a cobalt sulfide mineral with the composition Co+2Co+32S4. It was discovered in 1845 in Västmanland, Sweden, and was named to honor Carl Linnaeus (1707–1778).[1]
Linnaeite | |
---|---|
Linnaeite samples and polished section | |
General | |
Category | Sulfide mineral Thiospinel group Spinel structural group |
Formula (repeating unit) | Co+2Co+32S4 |
Strunz classification | 2.DA.05 |
Crystal system | Cubic |
Crystal class | Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) |
Space group | Fd3m |
Unit cell | a = 9.43 Å; Z = 8 |
Identification | |
Color | Steel gray to gray violet |
Crystal habit | As octahedral crystals; massive, granular |
Twinning | On {111} |
Cleavage | Imperfect on {001} |
Fracture | Subconchoidal |
Mohs scale hardness | 4.5-5.5 |
Luster | Metallic |
Streak | Grayish-black |
Diaphaneity | Opaque |
Specific gravity | 4.8-5.8 |
Alters to | Tarnishes in air |
References | [1][2][3] |
Linnaeite forms a series with polydymite, Ni+2Ni+32S4.[4] Linnaeite is found in hydrothermal veins with other cobalt and nickel sulfides in many localities around the world.[3]
References
- Schumann, Walter (1991). Mineralien aus aller Welt. BLV Bestimmungsbuch (2 ed.). p. 223. ISBN 3-405-14003-X.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.