Augelite and Riebeckite Physical Properties

Augelite

Riebeckite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.70-2.753.28-3.44

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Uneven, Splintery, Brittle

1.6 Cleavage

From the Greek for luster, for its pearly luster on the cleavage.

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

1.7 Mohs Hardness

4.5-55.0-6.0

2 10

1.8 Chemical Composition

Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Not Available

Augelite and Riebeckite Chemical Formula

While comparing Augelite and Riebeckite 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 Augelite and Riebeckite chemical formula.

Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

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Augelite and Riebeckite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Augelite and Riebeckite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Augelite and Riebeckite Optical Properties during the identification of gemstone. Specific gravity of Augelite is 3.28-3.44 whereas that of Riebeckite is 3.28-3.44.