Gypsum and Pyrophyllite Physical Properties

Gypsum

Pyrophyllite

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1 Physical Properties

1.1 Tenacity

Flexible

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.20-2.402.65-2.90

1 7.18

1.5 Fracture

Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

Perfect on {010}, distinct on {100}

{001} Perfect

1.7 Mohs Hardness

2Not Available

2 10

1.8 Chemical Composition

CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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

Gypsum and Pyrophyllite Chemical Formula

While comparing Gypsum 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 Gypsum and Pyrophyllite chemical formula.

Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Gypsum and Pyrophyllite Specific Gravity

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