Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.90-4.003.84
1
7.18
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Fracture
Conchoidal
Subconchoidal, Conchoidal
Cleavage
Perfect on {001}, good on {210}, poor on {010}
{0001} good, {10 1 0} parting
Mohs Hardness
3-3.57.5-8
2
10
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Chemical Composition
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Ca,Ce)(Al,Ti,Mg)12O19