Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.79-2.872.98-3.10
1
7.18
👆🏻
Fracture
Conchoidal
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Cleavage
{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces
[100] Perfect, [110] Good, [011] Distinct
Mohs Hardness
5.5-66
2
10
👆🏻
Chemical Composition
NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references