Almandine and Anorthoclase Physical Properties

Almandine

Anorthoclase

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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

3.95-4.302.56-2.62

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

none

From the Greek for oblique and fracture, descriptive of the cleavage

1.7 Mohs Hardness

7-7.56-6.5

2 10

1.8 Chemical Composition

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

(Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Almandine and Anorthoclase Chemical Formula

While comparing Almandine and Anorthoclase 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 Anorthoclase chemical formula.

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

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Almandine and Anorthoclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Almandine and Anorthoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine and Anorthoclase Optical Properties during the identification of gemstone. Specific gravity of Almandine is 2.56-2.62 whereas that of Anorthoclase is 2.56-2.62.