Riebeckite and Pyrophyllite Physical Properties

Riebeckite

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

3.28-3.442.65-2.90

1 7.18

1.5 Fracture

Uneven, Splintery, Brittle

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

{001} Perfect

1.7 Mohs Hardness

5.0-6.0Not Available

2 10

1.8 Chemical Composition

Not Available

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

Riebeckite and Pyrophyllite Chemical Formula

While comparing Riebeckite 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 Riebeckite and Pyrophyllite chemical formula.

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

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Riebeckite and Pyrophyllite Specific Gravity

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