Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.253.16-3.23
1
7.18
👆🏻
Fracture
-
Conchoidal, Uneven, Conchoidal to uneven
Cleavage
Imperfect in one direction
[0001] indistinct, [1010] indistinct
Mohs Hardness
5-5.55
2
10
👆🏻
Chemical Composition
CaCuAlSi 2O 6(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references