Linnaeite
From Infogalactic: the planetary knowledge core
| Linnaeite | |
|---|---|
| 240px
Linnaeite samples and polished section
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| General | |
| Category | Sulfide mineral Thiospinel group Spinel structural group |
| Formula (repeating unit) |
Co+2Co+32S4 |
| Strunz classification | 02.DA.05 |
| Crystal symmetry | Isometric hexoctahedral H-M symbol: (4/m32/m) Space group: F d3m |
| Unit cell | a = 9.43 Å; Z=8 |
| Identification | |
| Color | Steel gray to gray violet |
| Crystal habit | As octahedral crystals; massive, granular |
| Crystal system | Cubic |
| 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 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 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
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