Rosasite
CuZn(CO3)(OH)2IMA symbol: Rssgrandfathered
Rosasite is a carbonate or nitrate mineral with the formula CuZn(CO3)(OH)2, crystallizing in the monoclinic system. It has a Mohs hardness of 4-5, typically blue or green in color, with a silky luster, a specific gravity of 4.
Photos
Crystallography
| Crystal system | monoclinic crystal systemWikidata (CC0) |
|---|---|
| Space group | P 1 21/a 1 |
| Cell (Å, °) | a = 12.8976, b = 9.3705, c = 3.1623; α = 90, β = 110.262, γ = 90 |
| Cell volume | 358.536 ų, Z = 4 |
| Axial ratios | 1.3764:1:0.3375calculated from COD 9014823 |
| Source structure | COD 9014823 (Zeitschrift fur Kristallographie Supplement, 2006) |
Physical properties
| Density (calculated) | 4.087 g/cm³calculated from COD 9014823 |
|---|---|
| Hardness (Mohs) | 4-5single sourceDana's System, 2nd Appendix (1909) |
| Specific gravity | 4 g/cm3corroboratedDana's System, 2nd Appendix (1909) |
| Color | blue, greenDana's System, 2nd Appendix (1909) |
| Luster | silkyDana's System, 2nd Appendix (1909) |
Chemistry (calculated)
| Molecular weight | 222.98 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Cu 28.5%, Zn 29.33%, C 5.39%, O 35.88%, H 0.9% |
Classification
| Nickel-Strunz (10th) | 5.BA.10Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 5.BA.10Wikidata (CC0) |