Hematite and Spinel Physical Properties

Hematite

Spinel

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

5.00-5.303.64-3.66

1 7.18

1.5 Fracture

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

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

None, but may exhibit slight parting

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

Fe 2O 3Arthur Thomas , Gemstones (2009)

MgAl₂O₄

Hematite and Spinel Chemical Formula

While comparing Hematite and Spinel 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 Spinel chemical formula.

Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Spinel- MgAl₂O₄

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Hematite and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hematite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hematite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Hematite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.