Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.22-3.402.79-2.87
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal
Cleavage
Perfect
{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces
Mohs Hardness
5-65.5-6
2
10
👆🏻
Chemical Composition
(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)
NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references