Inesite
Ca2Mn2+7Si10O28(OH)2·5H2OIMA symbol: Insgrandfathered
Inesite is a silicate mineral with the formula Ca2Mn2+7Si10O28(OH)2·5H2O, crystallizing in the triclinic system. It has a Mohs hardness of 6, typically colorless, red or rose in color, with a vitreous luster, a specific gravity of 2.965. Its streak is white.
Photos
Crystallography
| Crystal system | triclinic crystal systemWikidata (CC0) |
|---|---|
| Space group | P -1 |
| Cell (Å, °) | a = 8.889, b = 9.247, c = 11.975; α = 88.15, β = 132.07, γ = 96.64 |
| Cell volume | 724.41 ų, Z = 1 |
| Axial ratios | 0.9613:1:1.2950calculated from COD 9000656 |
| Source structure | COD 9000656 (American Mineralogist, 1978) |
Powder X-ray diffraction (calculated)
| d (Å) | 9.168 | 2.931 | 2.73 | 2.836 | 4 | 2.914 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 37.9 | 33.3 | 18.9 | 18.1 | 13.8 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9000656; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 3.019 g/cm³calculated from COD 9000656 |
|---|---|
| Hardness (Mohs) | 6single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Specific gravity | 2.965 g/cm3corroboratedDana's System, 2nd Appendix (1909) |
| Color | colorless, red, rosesingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Streak | whitesingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Luster | vitreoussingle sourceDana, System of Mineralogy, 6th ed. (1892) |
Classification
| Nickel-Strunz (10th) | 9.DL.05Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 9.DL.05Wikidata (CC0) |
| Dana (8th) | 66.3.3.1Wikidata (CC0) |