Microlite
A2-mTa2X6-wZ-n See https://www.mindat.org/min-2705.htmlIMA symbol: Micother:GROUP
Microlite is a mineral with the formula A2-mTa2X6-wZ-n See https://www.mindat.org/min-2705.html, crystallizing in the cubic system. It has a Mohs hardness of 5.5, typically brown, red or yellow in color, with a resinous luster, a specific gravity of 5.485. Its streak is brown or yellow.
Photos
Crystallography
| Crystal system | cubic crystal systemWikidata (CC0) |
|---|---|
| Space group | F d -3 m :2 |
| Cell (Å, °) | a = 10.421, b = 10.421, c = 10.421; α = 90, β = 90, γ = 90 |
| Cell volume | 1131.69 ų, Z = 8 |
| Axial ratios | 1.0000:1:1.0000calculated from COD 9012068 |
| Source structure | COD 9012068 (Materials Research Bulletin, 1997) — 1 of 4 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 3.008 | 6.017 | 1.842 | 1.571 | 3.142 | 2.605 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 57 | 45.5 | 42.8 | 40.7 | 31.9 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9012068; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 6.539 g/cm³calculated from COD 9012068 |
|---|---|
| Hardness (Mohs) | 5.5single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Specific gravity | 5.485 g/cm3single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Color | brown, red, yellowsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Streak | brown, yellowsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Luster | resinoussingle sourceDana, System of Mineralogy, 6th ed. (1892) |