Linarite
CuPb(SO4)(OH)2IMA symbol: Lnagrandfathered
Linarite is a sulfate mineral with the formula CuPb(SO4)(OH)2, crystallizing in the monoclinic system. It has a Mohs hardness of 2-5, typically blue in color, with an adamantine or vitreous luster, a specific gravity of 5.3-5.45. Its streak is blue.
Photos
.jpg){kind=link}
Crystallography
| Crystal system | monoclinic crystal systemWikidata (CC0) |
|---|---|
| Space group | P 1 21/m 1 |
| Cell (Å, °) | a = 9.682, b = 5.646, c = 4.683; α = 90, β = 102.66, γ = 90 |
| Cell volume | 249.77 ų, Z = 2 |
| Axial ratios | 1.7148:1:0.8294calculated from COD 9013792 |
| Source structure | COD 9013792 (The Canadian Mineralogist, 2009) — 1 of 2 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 4.569 | 3.528 | 3.149 | 3.152 | 3.104 | 4.846 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 95.7 | 87.1 | 74.7 | 72.7 | 65 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9013792; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 5.33 g/cm³calculated from COD 9013792 |
|---|---|
| Hardness (Mohs) | 2-5single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Specific gravity | 5.3-5.45 g/cm3corroboratedDana, System of Mineralogy, 6th ed. (1892) |
| Color | bluesingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Streak | bluesingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Luster | adamantine, vitreoussingle sourceDana, System of Mineralogy, 6th ed. (1892) |
Chemistry (calculated)
| Molecular weight | 400.82 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Cu 15.85%, Pb 51.69%, S 8%, O 23.95%, H 0.5% |
Classification
| Nickel-Strunz (10th) | 7.BC.65Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 7.BC.65Wikidata (CC0) |