Tenacity
Brittle
-
Solubility
Dilute acid
-
Durability
-
-
Specific Gravity
2.93-2.963.04-3.26
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Splintery, Uneven
Cleavage
Distinct on {010}, imperfect {110} and {011}
{110} perfect
Mohs Hardness
3.5-45-6
2
10
👆🏻
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)