Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.20-3.252.72-2.75
1
7.18
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Fracture
Uneven, Conchoidal
Uneven
Cleavage
Good/distinct on [210]
Perfect on [001], good on [010], imperfect on [110]
Mohs Hardness
5.56-6.5
2
10
👆🏻
Chemical Composition
Mg 2Si 2O 6Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)