Tenacity
-
-
Solubility
-
Partly soluble in HCl.
Durability
-
-
Specific Gravity
3.43-3.443.32-3.43
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
None Observed
{100} perfect; {110} and {1 1 0} good; {010} poor
Mohs Hardness
6.5-75.5-6
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references