Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
6.8-7.12.98-3.10
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Cleavage
None
[100] Perfect, [110] Good, [011] Distinct
Mohs Hardness
3-46
2
10
👆🏻
Chemical Composition
C20H36
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references