Tenacity
-
Brittle
Solubility
-
Dilute acid
Durability
-
-
Specific Gravity
2.90-3.102.93-2.96
1
7.18
👆🏻
Fracture
Splintery, Granular
Subconchoidal, Conchoidal
Cleavage
None
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
6-6.53.5-4
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references