Brushite
Ca(PO3OH)·2H2OIMA symbol: Bshgrandfathered
Brushite is a phosphate, arsenate, or vanadate mineral with the formula Ca(PO3OH)·2H2O, crystallizing in the monoclinic system. It has a Mohs hardness of 2-2.5, typically colorless or yellow in color, with an earthy or pearly luster, a specific gravity of 2.208. Cleavage is perfect.
Photos
Physical properties
| Hardness (Mohs) | 2-2.5single sourceDana, System of Mineralogy, 6th ed. (1892) |
|---|---|
| Specific gravity | 2.208 g/cm3single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Color | colorless, yellowsingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Luster | earthy, pearly, resinous, vitreoussingle sourceDana, System of Mineralogy, 6th ed. (1892) |
| Cleavage | perfectDana, System of Mineralogy, 6th ed. (1892) |
Chemistry (calculated)
| Molecular weight | 172.09 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Ca 23.29%, P 18%, O 55.78%, H 2.93% |
Classification
| Nickel-Strunz (10th) | 8.CJ.50Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 8.CJ.50Wikidata (CC0) |