Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.63-3.9-9999
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
-
Cleavage
Indistinct
None
Mohs Hardness
7.5-83-4
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references
Celestite, Andalusite, Feldspar, Dolomite, Gypsum, Halloysite, Kaolinite, Montmorillonite, Sepiolite, Smectite, Vermiculite