Tenacity
-
Flexible
Solubility
-
Soluble
Durability
-
-
Specific Gravity
2.55-2.572.20-2.40
1
7.18
👆🏻
Fracture
Uneven
Conchoidal, Splintery, Fibrous
Cleavage
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Perfect on {010}, distinct on {100}
Mohs Hardness
6-6.52
2
10
👆🏻
Chemical Composition
KAlSi3O8
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)