Austinite and Pyrophyllite Physical Properties

Austinite

Pyrophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Easily soluble in cold dilute HCl

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.122.65-2.90

1 7.18

1.5 Fracture

Brittle, Uneven, Brittle, Uneven

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

Good in two directions parallel to the prism faces {110}

{001} Perfect

1.7 Mohs Hardness

4-4.5Not Available

2 10

1.8 Chemical Composition

CaZn(AsO4)(OH)

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

Austinite and Pyrophyllite Chemical Formula

While comparing Austinite 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 Austinite and Pyrophyllite chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)
Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Green Gemstones

Austinite Vs Cordierite

Austinite Vs Clintonite

Austinite Vs Apophyllite KF

Austinite and Pyrophyllite Specific Gravity

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