Tenacity
-
Brittle
Solubility
Partly soluble in HCl.
-
Durability
-
-
Specific Gravity
3.32-3.435.50-5.90
1
7.18
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Fracture
Conchoidal
Conchoidal
Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
On {10 1 0}, perfect; parting on {000 1 }
Mohs Hardness
5.5-64
2
10
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Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)