Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.253.90-4.00
1
7.18
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Fracture
-
Conchoidal
Cleavage
Imperfect in one direction
Perfect on {001}, good on {210}, poor on {010}
Mohs Hardness
5-5.53-3.5
2
10
👆🏻
Chemical Composition
CaCuAlSi 2O 6(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references