Wulfenite and Pyrophyllite Physical Properties

Wulfenite

Pyrophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.50-7.002.65-2.90

1 7.18

1.5 Fracture

Irregular, Brittle, Conchoidal

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

On {011}, distinct; on {001}, {013}, indistinct

{001} Perfect

1.7 Mohs Hardness

3Not Available

2 10

1.8 Chemical Composition

PbMoO 4Walter Schumann , Gemstones of the world (2001)

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

Wulfenite and Pyrophyllite Chemical Formula

While comparing Wulfenite 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 Wulfenite and Pyrophyllite chemical formula.

Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)
Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Wulfenite and Pyrophyllite Specific Gravity

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