Tenacity
Brittle
Brittle
Solubility
Effervesces in hot HCl
Soluble
Durability
-
-
Specific Gravity
2.92-3.123.25-3.35
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal, ConchoidalWalter Schumann
Cleavage
[10 1 1] perfect
Perfect in three directions
Mohs Hardness
3.5-4.55
2
10
👆🏻
Chemical Composition
MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references