Linnaeite
Co2+Co3+2S4IMA symbol: Lingrandfathered
Linnaeite is a sulfide or sulfosalt mineral with the formula Co2+Co3+2S4, crystallizing in the cubic system. It has a Mohs hardness of 5.5, typically gray or red in color, with a metallic luster, a specific gravity of 4.8-5. Its streak is black or gray.
Photos
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Crystallography
| Crystal system | cubic crystal systemWikidata (CC0) |
|---|---|
| Space group | F d -3 m :1 |
| Cell (Å, °) | a = 9.401, b = 9.401, c = 9.401; α = 90, β = 90, γ = 90 |
| Cell volume | 830.8 ų, Z = 8 |
| Axial ratios | 1.0000:1:1.0000calculated from COD 1011005 |
| Source structure | COD 1011005 (Zeitschrift fuer Anorganische und Allgemeine Chemie, 1938) — 1 of 3 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 2.835 | 1.662 | 2.35 | 1.809 | 3.324 | 5.428 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 83.4 | 49.4 | 46.8 | 30.7 | 16.6 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 1011005; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 4.878 g/cm³calculated from COD 1011005 |
|---|---|
| Hardness (Mohs) | 5.5single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Specific gravity | 4.8-5 g/cm3corroboratedDana, System of Mineralogy, 6th ed. (1892) |
| Color | gray, redsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Streak | black, graysingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Luster | metallicsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
Classification
| Nickel-Strunz (10th) | 2.DA.05Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 2.DA.05Wikidata (CC0) |
| Dana (8th) | 2.10.1.1Wikidata (CC0) |