Tenacity
Flexible
-
Solubility
Soluble
-
Durability
-
-
Specific Gravity
2.20-2.404.76-5.03
1
7.18
👆🏻
Fracture
Conchoidal, Splintery, Fibrous
Conchoidal
Cleavage
Perfect on {010}, distinct on {100}
None
Mohs Hardness
25.5-6.5
2
10
👆🏻
Chemical Composition
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)