Tenacity
Brittle
-
Solubility
Soluble
-
Durability
-
-
Specific Gravity
3.25-3.352.27-2.33
1
7.18
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Fracture
Conchoidal, ConchoidalWalter Schumann
-
Cleavage
Perfect in three directions
Perfect
Mohs Hardness
55.5-6
2
10
👆🏻
Chemical Composition
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)