Almandine and Apophyllite Physical Properties

Almandine

Apophyllite

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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

3.95-4.30

2.30-2.50

1.5 Fracture

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

Uneven, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

none

Perfect on (001)

1.7 Mohs Hardness

7-7.5

4.5-5

1.8 Chemical Composition

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

KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

Almandine and Apophyllite Chemical Formula

While comparing Almandine and Apophyllite 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 Apophyllite chemical formula.

Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

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Almandine and Apophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Almandine and Apophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine and Apophyllite Optical Properties during the identification of gemstone. Specific gravity of Almandine is 2.30-2.50 whereas that of Apophyllite is 2.30-2.50.