Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.15-3.212.98-3.10
1
7.18
👆🏻
Fracture
-
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Cleavage
1,2 prismatic
[100] Perfect, [110] Good, [011] Distinct
Mohs Hardness
6-76
2
10
👆🏻
Chemical Composition
LiAlSi2O6
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references