Algodonite
Cu1-xAsx (x ≈ 0.15)IMA symbol: Agograndfathered
Algodonite is a sulfide or sulfosalt mineral with the formula Cu1-xAsx (x ≈ 0.15). It has a Mohs hardness of 4, typically white or gray in color, with a dull or metallic luster, a specific gravity of 7.
Photos
Crystallography
| Space group | P 63/m m c |
|---|---|
| Cell (Å, °) | a = 2.588, b = 2.588, c = 4.226; α = 90, β = 90, γ = 120 |
| Cell volume | 24.513 ų, Z = 2 |
| Axial ratios | 1.0000:1:1.6329calculated from COD 9014013 |
| Source structure | COD 9014013 (Canadian Journal of Chemistry, 1960) — 1 of 2 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 1.98 | 2.113 | 2.241 | 1.104 | 1.193 | 1.294 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 27.4 | 24.6 | 17.7 | 16.9 | 14.9 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9014013; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 8.781 g/cm³calculated from COD 9014013 |
|---|---|
| Hardness (Mohs) | 4single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Specific gravity | 7 g/cm3single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Color | gray, whitesingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Luster | dull, metallicsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
Classification
| Nickel-Strunz (10th) | 2.AA.10aWikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 2.AA.10aWikidata (CC0) |