Tellurite
TeO2IMA symbol: Tlrgrandfathered
Tellurite is an oxide or hydroxide mineral with the formula TeO2. It has a Mohs hardness of 2, typically white or yellow in color, with an adamantine luster, a specific gravity of 24. Cleavage is perfect.
Photos
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Crystallography
| Space group | P b c a |
|---|---|
| Cell (Å, °) | a = 12.035, b = 5.464, c = 5.607; α = 90, β = 90, γ = 90 |
| Cell volume | 368.712 ų, Z = 8 |
| Axial ratios | 2.2026:1:1.0262calculated from COD 9008125 |
| Source structure | COD 9008125 (Zeitschrift fur Kristallographie, 1967) — 1 of 2 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 3.281 | 3.721 | 3.009 | 1.931 | 2.298 | 2.023 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 96.4 | 38.3 | 26.9 | 24.3 | 24 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9008125; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 5.75 g/cm³calculated from COD 9008125 |
|---|---|
| Hardness (Mohs) | 2Dana, System of Mineralogy, 6th ed. (1892) |
| Specific gravity | 24 g/cm3single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Color | white, yellowsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Luster | adamantinesingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Cleavage | perfectsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
Chemistry (calculated)
| Molecular weight | 159.6 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Te 79.95%, O 20.05% |
Classification
| Nickel-Strunz (10th) | 4.DE.20Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 4.DE.20Wikidata (CC0) |