Siegenite
CoNi2S4IMA symbol: Seggrandfathered
Siegenite is a sulfide or sulfosalt mineral with the formula CoNi2S4, crystallizing in the cubic system. It has a calculated density of 4.834 g/cm3.
Crystallography
| Crystal system | cubic crystal systemWikidata (CC0) |
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| Space group | F d -3 m :2 |
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| Cell (Å, °) | a = 9.424, b = 9.424, c = 9.424; α = 90, β = 90, γ = 90 |
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| Cell volume | 836.962 ų, Z = 8 |
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| Axial ratios | 1.0000:1:1.0000calculated from COD 9009851 |
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| Source structure | COD 9009851 (Canadian Journal of Chemistry, 1971) — 1 of 2 structures |
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Powder X-ray diffraction (calculated)
| d (Å) | 2.841 | 1.666 | 2.356 | 1.814 | 3.332 | 1.227 |
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| I/I₀ | 100 | 81.5 | 46.1 | 45.2 | 30.7 | 16.6 |
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xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9009851; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 4.834 g/cm³calculated from COD 9009851 |
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Chemistry (calculated)
| Molecular weight | 304.58 g/molcalculated from the IMA formula |
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| Composition (wt%) | Co 19.35%, Ni 38.54%, S 42.11% |
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Classification
| Nickel-Strunz (10th) | 2.DA.05Wikidata (CC0) |
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| Nickel-Strunz (9th) | 2.DA.05Wikidata (CC0) |
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| Dana (8th) | 2.10.1.6Wikidata (CC0) |
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