Tenacity
Brittle
-
Solubility
Dilute acid
-
Durability
-
-
Specific Gravity
2.93-2.962.27-2.33
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
-
Cleavage
Distinct on {010}, imperfect {110} and {011}
Perfect
Mohs Hardness
3.5-45.5-6
2
10
👆🏻
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)