Stolzite
Pb(WO4)IMA symbol: Szgrandfathered
Stolzite is a sulfate mineral with the formula Pb(WO4), crystallizing in the tetragonal system. It has a Mohs hardness of 2.75-3, typically brown, gray, green or red in color, with an adamantine or resinous luster, a specific gravity of 7.87-8.13. Its streak is red; cleavage is distinct.
Photos
Crystallography
| Crystal system | tetragonal crystal systemWikidata (CC0) |
|---|---|
| Space group | I 41/a :2 |
| Cell (Å, °) | a = 5.46979, b = 5.46979, c = 12.06339; α = 90, β = 90, γ = 90 |
| Cell volume | 360.92 ų, Z = 4 |
| Axial ratios | 1.0000:1:2.2055calculated from COD 9009811 |
| Source structure | COD 9009811 (Journal of Alloys and Compounds, 2001) — 1 of 7 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 3.256 | 2.026 | 1.663 | 2.735 | 1.784 | 3.016 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 29.2 | 28.5 | 25.4 | 17.8 | 16.9 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9009811; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 8.374 g/cm³calculated from COD 9009811 |
|---|---|
| Hardness (Mohs) | 2.75-3single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Specific gravity | 7.87-8.13 g/cm3corroboratedDana, System of Mineralogy, 6th ed. (1892) |
| Color | brown, gray, green, red, yellowsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Streak | whitesingle sourceWikidata (CC0) redsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Luster | adamantine, resinoussingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Cleavage | distinctsingle sourceFord, Dana's Textbook of Mineralogy, 3rd ed. (1922) |
Chemistry (calculated)
| Molecular weight | 455.04 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Pb 45.53%, W 40.4%, O 14.06% |
Classification
| Nickel-Strunz (10th) | 7.GA.05Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 7.GA.05Wikidata (CC0) |