Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.98-3.102.42-2.58
1
7.18
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Fracture
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Conchoidal, Splintery, ConchoidalWalter Schumann
Cleavage
[100] Perfect, [110] Good, [011] Distinct
[010] perfect
Mohs Hardness
64-5
2
10
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Chemical Composition
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
AlPO4 · 2(H2O)