Hematite and Almandine Physical Properties

Hematite

Almandine

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.00-5.303.95-4.30

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

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

1.6 Cleavage

None, may show partings on {0001} and {10 1 1}

none

1.7 Mohs Hardness

67-7.5

2 10

1.8 Chemical Composition

Fe 2O 3Arthur Thomas , Gemstones (2009)

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

Hematite and Almandine Chemical Formula

While comparing Hematite 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 Hematite and Almandine chemical formula.

Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Hematite and Almandine Specific Gravity

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