Pezzottaite and Pyrophyllite Physical Properties

Pezzottaite

Pyrophyllite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.14

2.65-2.90

1.5 Fracture

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

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

Imperfect; basal

{001} Perfect

1.7 Mohs Hardness

7.5-8

Not Available

1.8 Chemical Composition

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

Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Pezzottaite and Pyrophyllite Chemical Formula

While comparing Pezzottaite and Pyrophyllite 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 Pyrophyllite chemical formula.

Chemical formula of Pezzottaite- (Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.
Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Pezzottaite and Pyrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pezzottaite and Pyrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pezzottaite and Pyrophyllite Optical Properties during the identification of gemstone. Specific gravity of Pezzottaite is 2.65-2.90 whereas that of Pyrophyllite is 2.65-2.90.