Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.16-3.435.50-5.90
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Conchoidal
Cleavage
{110} Good, {110} Good
On {10 1 0}, perfect; parting on {000 1 }
Mohs Hardness
5-64
2
10
👆🏻
Chemical Composition
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)