Tenacity
Brittle
-
Solubility
Dilute acid
-
Durability
-
-
Specific Gravity
2.93-2.96-9999
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
-
Cleavage
Distinct on {010}, imperfect {110} and {011}
Indiscernible
Mohs Hardness
3.5-4-9999
2
10
👆🏻
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca10(Mg,Fe)2(Si2O7)2(SiO4)2O(OH)2