Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.773.90-4.00
1
7.18
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Fracture
Uneven
Conchoidal
Cleavage
Perfect [001] good [010] poor [110]
Perfect on {001}, good on {210}, poor on {010}
Mohs Hardness
6-6.53-3.5
2
10
👆🏻
Chemical Composition
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references