Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.28-3.382.98-3.10
1
7.18
👆🏻
Fracture
Splintery, Fibrous
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Cleavage
Good on [110]
[100] Perfect, [110] Good, [011] Distinct
Mohs Hardness
6.5-76
2
10
👆🏻
Chemical Composition
NaAlSi 2O 6Ulrich Henn and Claudio C.
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references