Anglesite
Pb(SO4)IMA symbol: Anggrandfathered
Anglesite is a sulfate mineral with the formula Pb(SO4), crystallizing in the orthorhombic system. It has a Mohs hardness of 2.75-3, typically white, blue, gray or green in color, with an adamantine or resinous luster, a specific gravity of 6.12-6.39. Its streak is red.
Photos
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Crystallography
| Crystal system | orthorhombic crystal systemWikidata (CC0) |
|---|---|
| Space group | P b n m |
| Cell (Å, °) | a = 6.95802, b = 8.48024, c = 5.39754; α = 90, β = 90, γ = 90 |
| Cell volume | 318.486 ų, Z = 4 |
| Axial ratios | 0.8205:1:0.6365calculated from COD 9015524 |
| Source structure | COD 9015524 (American Mineralogist, 2012) — 1 of 5 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 3.007 | 3.334 | 4.265 | 3.219 | 2.067 | 3.81 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 82.2 | 77.7 | 68.6 | 57.2 | 52.3 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9015524; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 6.325 g/cm³calculated from COD 9015524 |
|---|---|
| Hardness (Mohs) | 2.75-3single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Specific gravity | 6.12-6.39 g/cm3corroboratedDana, System of Mineralogy, 6th ed. (1892) |
| Color | blue, gray, green, white, yellowsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Streak | whitesingle sourceWikidata (CC0) redsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Luster | adamantine, resinous, vitreoussingle sourceDana, System of Mineralogy, 6th ed. (1892) |
Chemistry (calculated)
| Molecular weight | 303.26 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Pb 68.32%, S 10.57%, O 21.1% |
Classification
| Nickel-Strunz (10th) | 7.AD.35Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 7.AD.35Wikidata (CC0) |
| Dana (8th) | 28.3.1.3Wikidata (CC0) |