Tenacity
-
Brittle
Solubility
-
Poorly soluble in dilute HCl
Durability
-
-
Specific Gravity
3.122.80-2.95
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
None
Perfect on {10 1 1}, rhombohedral cleavage
Mohs Hardness
-99993.5-4
2
10
👆🏻
Chemical Composition
Ca 9(Mg,Fe2+ )(PO 4) 6(PO 3OH)Anthony et al , Handbook of mineralogy (2001)
CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references