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Albite and Pezzottaite Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.90-3.14   
2.60-2.65   

Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle   
Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal   

Cleavage
Imperfect; basal   
Perfect on {001}, very good on {010}, imperfect on {110}   

Mohs Hardness
7.5-8   
6-6.5   

Chemical Composition
(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.   
NaAlSi 3O 8Michael O’Donoghue , Gems, Sixth Edition (2006)   

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