Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
3.1-3.253.25-3.35
1
7.18
👆🏻
Fracture
Uneven
Conchoidal, ConchoidalWalter Schumann
Cleavage
Indistinct
Perfect in three directions
Mohs Hardness
55
2
10
👆🏻
Chemical Composition
Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references