Tenacity
Brittle
Sectile
Solubility
Dilute acid
-
Durability
-
-
Specific Gravity
2.93-2.963.07
1
7.18
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Fracture
Subconchoidal, Conchoidal
-
Cleavage
Distinct on {010}, imperfect {110} and {011}
Perfect on {010}, indistinct on {100} and {102}
Mohs Hardness
3.5-42
2
10
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Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ni3(AsO4)2•8(H2O)