Tenacity
Brittle
-
Solubility
Dilute acid
insoluble in water
Durability
-
-
Specific Gravity
2.93-2.962.51-2.63
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Fibrous
Cleavage
Distinct on {010}, imperfect {110} and {011}
Perfect basal
Mohs Hardness
3.5-42.5-4.5
2
10
👆🏻
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg 3(Si 2O 5)(OH) 4Gemdat.org , Management Team (2012)