Almandine and Chromite Physical Properties

Almandine

Chromite

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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

3.95-4.304.5-4.8

1 7.18

1.7 Fracture

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

Uneven

1.8 Cleavage

none

None, parting may develop along {111}

1.9 Mohs Hardness

7-7.55.5

2 10

1.13 Chemical Composition

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

Fe++Cr2O4

Almandine and Chromite Chemical Formula

While comparing Almandine and Chromite 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 Chromite chemical formula.

Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Chromite- Fe++Cr2O4

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Almandine and Chromite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Almandine and Chromite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine and Chromite Optical Properties during the identification of gemstone. Specific gravity of Almandine is 4.5-4.8 whereas that of Chromite is 4.5-4.8.