Tenacity
Flexible
-
Solubility
Soluble
insoluble in water
Durability
-
-
Specific Gravity
2.20-2.403.62-3.87
1
7.18
👆🏻
Fracture
Conchoidal, Splintery, Fibrous
Conchoidal
Cleavage
Perfect on {010}, distinct on {100}
None
Mohs Hardness
27-7.5
2
10
👆🏻
Chemical Composition
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)