Bismuthinite
Bi2S3IMA symbol: Bingrandfathered
Bismuthinite is a sulfide or sulfosalt mineral with the formula Bi2S3, crystallizing in the orthorhombic system. It has a Mohs hardness of 2, typically white, gray or yellow in color, with a metallic luster, a specific gravity of 6.4-6.5. Its streak is white or gray.
Photos
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Crystallography
| Crystal system | orthorhombic crystal systemWikidata (CC0) |
|---|---|
| Space group | P n m a |
| Cell (Å, °) | a = 11.256, b = 3.8966, c = 11.205; α = 90, β = 90, γ = 90 |
| Cell volume | 491.453 ų, Z = 4 |
| Axial ratios | 2.8887:1:2.8756calculated from COD 9003468 |
| Source structure | COD 9003468 (American Mineralogist, 2004) — 1 of 17 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 3.077 | 2.781 | 3.558 | 3.545 | 1.945 | 2.515 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 90.2 | 82.3 | 80.6 | 57.1 | 45.4 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9003468; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 5.876 g/cm³calculated from COD 9003468 |
|---|---|
| Hardness (Mohs) | 2single sourceWikidata (CC0) 2single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Specific gravity | 6.4-6.5 g/cm3single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Color | gray, white, yellowsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Streak | gray, white, yellowsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Luster | metallicsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
Chemistry (calculated)
| Molecular weight | 514.16 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Bi 81.29%, S 18.71% |
Classification
| Nickel-Strunz (10th) | 2.DB.05Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 2.DB.05aWikidata (CC0) |