Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.14-3.25-9999
1
7.18
👆🏻
Fracture
-
-
Cleavage
Perfect
None
Mohs Hardness
6-73-4
2
10
👆🏻
Chemical Composition
Al 2SiO 5Arthur Thomas , Gemstones (2009)
Celestite, Andalusite, Feldspar, Dolomite, Gypsum, Halloysite, Kaolinite, Montmorillonite, Sepiolite, Smectite, Vermiculite