Willemite and Pyrophyllite Physical Properties

Willemite

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

3.89-4.182.65-2.90

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

{0001}, {11 2 0} imperfect

{001} Perfect

1.7 Mohs Hardness

5.5Not Available

2 10

1.8 Chemical Composition

Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Willemite and Pyrophyllite Chemical Formula

While comparing Willemite 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 Willemite and Pyrophyllite chemical formula.

Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Red Gemstones

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Willemite Vs Garnet Malaia

Willemite and Pyrophyllite Specific Gravity

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