Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.69-2.792.54-2.61
1
7.18
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Fracture
Conchoidal
Uneven
Cleavage
Poor on {0001}
{001} Perfect, {010} Good
Mohs Hardness
5.5-6.56
2
10
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Chemical Composition
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)