Breithauptite
NiSbIMA symbol: Bhpgrandfathered
Breithauptite is a sulfide or sulfosalt mineral with the formula NiSb, crystallizing in the hexagonal system. It has a Mohs hardness of 5.5, typically red or violet in color, with a metallic luster, a specific gravity of 7.541-8. Its streak is brown or red.
Photos
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Crystallography
| Crystal system | hexagonal crystal systemWikidata (CC0) |
|---|---|
| Space group | P 63 m c |
| Cell (Å, °) | a = 3.94, b = 3.94, c = 5.14; α = 90, β = 90, γ = 120 |
| Cell volume | 69.101 ų, Z = 2 |
| Axial ratios | 1.0000:1:1.3046calculated from COD 9008903 |
| Source structure | COD 9008903 (Crystal Structures, 1963) — 1 of 2 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 2.843 | 2.053 | 1.97 | 1.619 | 1.421 | 1.153 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 55.8 | 53.9 | 18.1 | 16.1 | 15.9 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9008903; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 8.673 g/cm³calculated from COD 9008903 |
|---|---|
| Hardness (Mohs) | 5.5single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Specific gravity | 7.541-8 g/cm3single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Color | red, violetsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Streak | brownsingle sourceWikidata (CC0) brown, redsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Luster | metallicsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
Chemistry (calculated)
| Molecular weight | 180.45 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Ni 32.53%, Sb 67.47% |
Classification
| Nickel-Strunz (10th) | 2.CC.05Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 2.CC.05Wikidata (CC0) |