Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.23-3.262.98-3.10
1
7.18
👆🏻
Fracture
Conchoidal
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Cleavage
Perfect on {010} imperfect on {100}
[100] Perfect, [110] Good, [011] Distinct
Mohs Hardness
6.5-76
2
10
👆🏻
Chemical Composition
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references