Tenacity
-
Brittle
Solubility
-
Dilute acid
Durability
-
-
Specific Gravity
3.43-3.442.93-2.96
1
7.18
👆🏻
Fracture
-
Subconchoidal, Conchoidal
Cleavage
None Observed
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
6.5-73.5-4
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references