Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
-99992.24-2.29
1
7.18
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Fracture
-
Uneven, Subconchoidal, Conchoidal
Cleavage
None
Very poor [100]
Mohs Hardness
3-45-5.5
2
10
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Chemical Composition
Celestite, Andalusite, Feldspar, Dolomite, Gypsum, Halloysite, Kaolinite, Montmorillonite, Sepiolite, Smectite, Vermiculite
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references