Tenacity
Brittle
Brittle
Solubility
Dilute acid
Soluble
Durability
-
-
Specific Gravity
2.93-2.963.30-3.50
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
Distinct on {010}, imperfect {110} and {011}
Perfect on {110}, poor on {101}, {001} rare
Mohs Hardness
3.5-45
2
10
👆🏻
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references