Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.20-3.253.1-3.2
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
-
Cleavage
Good/distinct on [210]
Vitreous, pearly on cleavage
Mohs Hardness
5.53-4
2
10
👆🏻
Chemical Composition
Mg 2Si 2O 6Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references