Tenacity
Brittle
Brittle
Solubility
Dilute acid
-
Durability
-
-
Specific Gravity
2.93-2.966.50-7.00
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Irregular, Conchoidal
Cleavage
Distinct on {010}, imperfect {110} and {011}
On {011}, distinct; on {001}, {013}, indistinct
Mohs Hardness
3.5-43
2
10
👆🏻
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
PbMoO 4Walter Schumann , Gemstones of the world (2001)