Tenacity
Brittle
-
Solubility
Dilute acid
-
Durability
-
-
Specific Gravity
2.93-2.962.65
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
ConchoidalWalter Schumann
Cleavage
Distinct on {010}, imperfect {110} and {011}
None
Mohs Hardness
3.5-4-9999
2
10
👆🏻
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO 2Ulrich Henn and Claudio C.