Tenacity
Brittle
-
Solubility
Dilute acid
insoluble in water
Durability
-
-
Specific Gravity
2.93-2.963.62-3.87
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Conchoidal
Cleavage
Distinct on {010}, imperfect {110} and {011}
None
Mohs Hardness
3.5-47-7.5
2
10
👆🏻
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)