Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.60-2.652.69-2.79
1
7.18
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Fracture
Uneven, Conchoidal
Conchoidal
Cleavage
Perfect on {001}, very good on {010}, imperfect on {110}
Poor on {0001}
Mohs Hardness
6-6.55.5-6.5
2
10
👆🏻
Chemical Composition
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references