Loparite
(Na0.5REE0.5)TiO3IMA symbol: Loprenamed
Loparite is an oxide or hydroxide mineral with the formula (Na0.5REE0.5)TiO3. It has a Mohs hardness of 5.75, a calculated density of 5.067 g/cm3. Its streak is brown.
Photos
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Crystallography
| Space group | I 4/m c m |
|---|---|
| Cell (Å, °) | a = 5.5025, b = 5.5025, c = 7.7701; α = 90, β = 90, γ = 90 |
| Cell volume | 235.259 ų, Z = 4 |
| Axial ratios | 1.0000:1:1.4121calculated from COD 9006870 |
| Source structure | COD 9006870 (Physics and Chemistry of Minerals, 2000) — 1 of 6 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 2.749 | 2.751 | 1.945 | 1.588 | 2.245 | 1.375 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 51.7 | 41.7 | 38.8 | 30.4 | 23.4 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9006870; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 5.067 g/cm³calculated from COD 9006870 |
|---|---|
| Hardness (Mohs) | 5.75single sourceWikidata (CC0) |
| Streak | brownsingle sourceWikidata (CC0) |
Classification
| Nickel-Strunz (10th) | 4.CC.35Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 4.CC.35Wikidata (CC0) |