Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
-99993.25-3.35
1
7.18
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Fracture
-
Conchoidal, ConchoidalWalter Schumann
Cleavage
None
Perfect in three directions
Mohs Hardness
3-45
2
10
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Chemical Composition
Celestite, Andalusite, Feldspar, Dolomite, Gypsum, Halloysite, Kaolinite, Montmorillonite, Sepiolite, Smectite, Vermiculite
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references