Tenacity
-
Flexible
Solubility
-
Soluble
Durability
-
-
Specific Gravity
3.63-3.92.20-2.40
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Conchoidal, Splintery, Fibrous
Cleavage
Indistinct
Perfect on {010}, distinct on {100}
Mohs Hardness
7.5-82
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)