Tenacity
Brittle
-
Solubility
Dilute acid
HCl soluble
Durability
-
-
Specific Gravity
2.93-2.964.27-4.29
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Uneven
Cleavage
Distinct on {010}, imperfect {110} and {011}
Perfect {010}
Mohs Hardness
3.5-45-5.5
2
10
👆🏻
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
FeO(OH)Arthur Thomas , Gemstones (2009)