Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.90-2.983.43-3.44
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
None Observed
Mohs Hardness
3.56.5-7
2
10
👆🏻
Chemical Composition
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references