Tenacity
Brittle
-
Solubility
Dilute acid
-
Durability
-
-
Specific Gravity
2.93-2.962.90-3.10
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Splintery, Granular
Cleavage
Distinct on {010}, imperfect {110} and {011}
None
Mohs Hardness
3.5-46-6.5
2
10
👆🏻
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references