Physical Properties
Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
-99993.25-3.35
1
7.18
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Fracture
-
Conchoidal, ConchoidalWalter Schumann
Cleavage
None
Perfect in three directions
Mohs Hardness
2.5-35
2
10
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Chemical Composition
CaCO3
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references