Tenacity
-
Brittle
Solubility
Partly soluble in HCl.
-
Durability
-
-
Specific Gravity
3.32-3.432.77
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
Perfect [001] good [010] poor [110]
Mohs Hardness
5.5-66-6.5
2
10
👆🏻
Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)