Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
5.50-5.903.90-4.00
1
7.18
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Fracture
Conchoidal
Conchoidal
Cleavage
On {10 1 0}, perfect; parting on {000 1 }
Perfect on {001}, good on {210}, poor on {010}
Mohs Hardness
43-3.5
2
10
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Chemical Composition
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references