Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
-99992.20-2.26
1
7.18
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Fracture
-
Uneven
Cleavage
None
Perfect on {110}
Mohs Hardness
3-45-5.5
2
10
👆🏻
Chemical Composition
Celestite, Andalusite, Feldspar, Dolomite, Gypsum, Halloysite, Kaolinite, Montmorillonite, Sepiolite, Smectite, Vermiculite
Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references