Manganosite
MnOIMA symbol: Mnggrandfathered
Manganosite is an oxide or hydroxide mineral with the formula MnO, crystallizing in the cubic system. It has a Mohs hardness of 5-6, typically black or green in color, with a vitreous luster, a specific gravity of 5.18. Its streak is brown.
Photos
Crystallography
| Crystal system | cubic crystal systemWikidata (CC0) |
|---|---|
| Space group | F m -3 m |
| Cell (Å, °) | a = 4.4459, b = 4.4459, c = 4.4459; α = 90, β = 90, γ = 90 |
| Cell volume | 87.878 ų, Z = 4 |
| Axial ratios | 1.0000:1:1.0000calculated from COD 9006658 |
| Source structure | COD 9006658 (Physics and Chemistry of Minerals, 1999) — 1 of 23 structures |
Powder X-ray diffraction (calculated)
| d (Å) | 2.223 | 2.567 | 1.572 | 1.34 | 1.283 | 1.111 |
|---|---|---|---|---|---|---|
| I/I₀ | 100 | 61.7 | 57.8 | 23.8 | 17.6 | 8 |
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9006658; idealized occupancies, no preferred orientation.
Physical properties
| Density (calculated) | 5.362 g/cm³calculated from COD 9006658 |
|---|---|
| Hardness (Mohs) | 5-6single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Specific gravity | 5.18 g/cm3corroboratedDana, System of Mineralogy, 6th ed. (1892) |
| Color | black, greensingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Streak | brownsingle sourceWikidata (CC0) |
| Luster | vitreoussingle sourceDana, System of Mineralogy, 6th ed. (1892) |
Chemistry (calculated)
| Molecular weight | 70.94 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Mn 77.45%, O 22.55% |
Classification
| Nickel-Strunz (10th) | 4.AB.25Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 4.AB.25Wikidata (CC0) |