Erythrite and Pyrophyllite Physical Properties

Erythrite

Pyrophyllite

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1 Physical Properties

1.1 Tenacity

Sectile

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.062.65-2.90

1 7.18

1.5 Fracture

Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

Perfect on {010}; poor on {100} and { 1 02}.

{001} Perfect

1.7 Mohs Hardness

Not AvailableNot Available

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

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

Erythrite and Pyrophyllite Chemical Formula

While comparing Erythrite 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 Erythrite and Pyrophyllite chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Erythrite and Pyrophyllite Specific Gravity

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