Tsumebite
Pb2Cu(PO4)(SO4)(OH)IMA symbol: Tsugrandfathered
Tsumebite is a phosphate, arsenate, or vanadate mineral with the formula Pb2Cu(PO4)(SO4)(OH). It has a Mohs hardness of 3-5, typically green in color, with a vitreous luster, a specific gravity of 6. Its streak is green; cleavage is perfect.
Photos
Physical properties
| Hardness (Mohs) | 3-5single sourceDana's System, 3rd Appendix (1915) |
|---|---|
| Specific gravity | 6 g/cm3single sourceFord, Dana's Textbook of Mineralogy, 3rd ed. (1922) |
| Color | greensingle sourceDana's System, 3rd Appendix (1915) |
| Streak | greensingle sourceWikidata (CC0) greensingle sourceFord, Dana's Textbook of Mineralogy, 3rd ed. (1922) |
| Luster | vitreoussingle sourceDana's System, 3rd Appendix (1915) |
| Cleavage | perfectsingle sourceFord, Dana's Textbook of Mineralogy, 3rd ed. (1922) |
Chemistry (calculated)
| Molecular weight | 685.99 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Pb 60.41%, Cu 9.26%, P 4.52%, O 20.99%, S 4.67%, H 0.15% |
Classification
| Nickel-Strunz (10th) | 8.BG.05Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 8.BG.05Wikidata (CC0) |