Pyrophyllite and Malachite Physical Properties

Pyrophyllite

Malachite

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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

2.65-2.903.25-4.10

1 7.18

1.5 Fracture

Gemstones (2009), Flexible Flexible fragments.

Conchoidal, Conchoidal, Gemstones (2009), Uneven

1.6 Cleavage

{001} Perfect

Perfect on { 2 01} fair on {010}

1.7 Mohs Hardness

Not Available3.5-4

2 10

1.8 Chemical Composition

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

Cu₂CO₃(OH)₂

Pyrophyllite and Malachite Chemical Formula

While comparing Pyrophyllite and Malachite 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 Pyrophyllite and Malachite chemical formula.

Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Malachite- Cu₂CO₃(OH)₂

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Pyrophyllite and Malachite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Malachite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Malachite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 3.25-4.10 whereas that of Malachite is 3.25-4.10.