Spessartine
Mn2+3Al2(SiO4)3IMA symbol: Spsgrandfathered
Spessartine is a silicate mineral with the formula Mn2+3Al2(SiO4)3, crystallizing in the cubic system. It has a calculated density of 4.197 g/cm3. Its streak is white.
Photos
Crystallography
| Crystal system | cubic crystal systemWikidata (CC0) |
|---|---|
| Space group | I a -3 d |
| Cell (Å, °) | a = 11.615, b = 11.615, c = 11.615; α = 90, β = 90, γ = 90 |
| Cell volume | 1566.96 ų, Z = 8 |
| Axial ratios | 1.0000:1:1.0000calculated from COD 9002691 |
| Source structure | COD 9002691 (American Mineralogist, 2002) — 1 of 16 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 2.597 | 1.552 | 2.904 | 1.611 | 1.884 | 2.371 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 36.9 | 31.3 | 30 | 22.4 | 19.6 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9002691; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 4.197 g/cm³calculated from COD 9002691 |
|---|---|
| Streak | whitesingle sourceWikidata (CC0) |
Classification
| Nickel-Strunz (10th) | 9.AD.25Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 9.AD.25Wikidata (CC0) |
| Dana (8th) | 51.4.3a.3Wikidata (CC0) |