Tenacity
Flexible
-
Solubility
Soluble
-
Durability
-
-
Specific Gravity
2.20-2.403.63-3.9
1
7.18
👆🏻
Fracture
Conchoidal, Splintery, Fibrous
Conchoidal, Uneven
Cleavage
Perfect on {010}, distinct on {100}
Indistinct
Mohs Hardness
27.5-8
2
10
👆🏻
Chemical Composition
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
(Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references