Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.70-2.752.78
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Conchoidal
Cleavage
From the Greek for luster, for its pearly luster on the cleavage.
{???} Distinct, {???} Indistinct
Mohs Hardness
4.5-55-6
2
10
👆🏻
Chemical Composition
Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
3CaAl 2Si 2O 8 · CaCO 3Anthony et al , Handbook of mineralogy (2001)