Tungstite
WO3·H2OIMA symbol: Tgsgrandfathered
Tungstite is an oxide or hydroxide mineral with the formula WO3·H2O. It has typically colorless in color, a specific gravity of 3. Its streak is yellow.
Photos
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Crystallography
| Space group | P m n b |
|---|---|
| Cell (Å, °) | a = 5.249, b = 10.711, c = 5.133; α = 90, β = 90, γ = 90 |
| Cell volume | 288.588 ų, Z = 4 |
| Axial ratios | 0.4901:1:0.4792calculated from COD 9004174 |
| Source structure | COD 9004174 (The Canadian Mineralogist, 1984) |
Powder X-ray diffraction (calculated)
| d (Å) | 3.472 | 5.356 | 2.559 | 1.736 | 1.835 | 1.637 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 58.8 | 19.2 | 13.1 | 12.1 | 11.4 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9004174; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 5.751 g/cm³calculated from COD 9004174 |
|---|---|
| Specific gravity | 3 g/cm3single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Color | colorlesssingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Streak | yellowsingle sourceWikidata (CC0) |
Chemistry (calculated)
| Molecular weight | 249.85 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | W 73.58%, O 25.61%, H 0.81% |
Classification
| Nickel-Strunz (10th) | 4.FJ.10Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 4.FJ.10Wikidata (CC0) |