Tenacity
-
-
Solubility
Partly soluble in HCl.
-
Durability
-
-
Specific Gravity
3.32-3.433.43-3.44
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
None Observed
Mohs Hardness
5.5-66.5-7
2
10
👆🏻
Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references