Almandine and Albite Physical Properties

Almandine

Albite

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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

3.95-4.302.60-2.65

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal

1.6 Cleavage

none

Perfect on {001}, very good on {010}, imperfect on {110}

1.7 Mohs Hardness

7-7.56-6.5

2 10

1.8 Chemical Composition

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

NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Almandine and Albite Chemical Formula

While comparing Almandine and Albite 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 Almandine and Albite chemical formula.

Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Albite- NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Almandine and Albite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Almandine and Albite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine and Albite Optical Properties during the identification of gemstone. Specific gravity of Almandine is 2.60-2.65 whereas that of Albite is 2.60-2.65.