Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.60-2.652.65-2.90
1
7.18
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Fracture
Uneven, Conchoidal
-
Cleavage
Perfect on {001}, very good on {010}, imperfect on {110}
{001} Perfect
Mohs Hardness
6-6.5-9999
2
10
👆🏻
Chemical Composition
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references