Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
2.98-3.103.25-3.35
1
7.18
👆🏻
Fracture
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Conchoidal, ConchoidalWalter Schumann
Cleavage
[100] Perfect, [110] Good, [011] Distinct
Perfect in three directions
Mohs Hardness
65
2
10
👆🏻
Chemical Composition
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references