Pezzottaite and Poudretteite Physical Properties

Pezzottaite

Poudretteite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.142.51-2.53

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Conchoidal, Splintery

1.6 Cleavage

Imperfect; basal

None

1.7 Mohs Hardness

7.5-85

2 10

1.8 Chemical Composition

(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Pezzottaite and Poudretteite Chemical Formula

While comparing Pezzottaite and Poudretteite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Pezzottaite and Poudretteite chemical formula.

Chemical formula of Pezzottaite- (Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.
Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

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Pezzottaite and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pezzottaite and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pezzottaite and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Pezzottaite is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.