Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
-99992.60-2.65
1
7.18
👆🏻
Fracture
-
Uneven, Conchoidal
Cleavage
None
Perfect on {001}, very good on {010}, imperfect on {110}
Mohs Hardness
3-46-6.5
2
10
👆🏻
Chemical Composition
Celestite, Andalusite, Feldspar, Dolomite, Gypsum, Halloysite, Kaolinite, Montmorillonite, Sepiolite, Smectite, Vermiculite
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)