Augelite and Almandine Physical Properties

Augelite

Almandine

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.70-2.753.95-4.30

1 7.18

1.5 Fracture

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

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

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

none

1.7 Mohs Hardness

4.5-57-7.5

2 10

1.8 Chemical Composition

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

Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Augelite and Almandine Chemical Formula

While comparing Augelite and Almandine 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 Almandine chemical formula.

Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Augelite and Almandine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Augelite and Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Augelite and Almandine Optical Properties during the identification of gemstone. Specific gravity of Augelite is 3.95-4.30 whereas that of Almandine is 3.95-4.30.