Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.70-2.753.85-3.94
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal, Uneven
Cleavage
From the Greek for luster, for its pearly luster on the cleavage.
{010} Good, {100} Distinct
Mohs Hardness
4.5-55-5.5
2
10
👆🏻
Chemical Composition
Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)