Quartz and Pyrophyllite Physical Properties

Quartz

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

2.652.65-2.90

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Brittle, Gems

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

{0110} Indistinct

{001} Perfect

1.7 Mohs Hardness

7Not Available

2 10

1.8 Chemical Composition

SiO₂

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

Quartz and Pyrophyllite Chemical Formula

While comparing Quartz 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 Quartz and Pyrophyllite chemical formula.

Chemical formula of Quartz- SiO₂
Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Quartz and Pyrophyllite Specific Gravity

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