Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.69-2.792.70-2.75
1
7.18
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Fracture
Conchoidal
Conchoidal
Cleavage
Poor on {0001}
From the Greek for luster, for its pearly luster on the cleavage.
Mohs Hardness
5.5-6.54.5-5
2
10
👆🏻
Chemical Composition
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)