Tenacity
Brittle
Brittle
Solubility
Dilute acid
-
Durability
-
-
Specific Gravity
2.93-2.962.33-2.37
1
7.18
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Fracture
Subconchoidal, Conchoidal
ConchoidalWalter Schumann
Cleavage
Distinct on {010}, imperfect {110} and {011}
Perfect on {010}, good on {100}
Mohs Hardness
3.5-47.5
2
10
👆🏻
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Be 2BO 3(OH)Ulrich Henn and Claudio C.