Sellaite and Hematite Physical Properties

Sellaite

Hematite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.14-3.165.00-5.30

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

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

1.6 Cleavage

Perfect on {010} and {110}

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

1.7 Mohs Hardness

5-5.56

2 10

1.8 Chemical Composition

MgF 2Ulrich Henn and Claudio C.

Fe 2O 3Arthur Thomas , Gemstones (2009)

Sellaite and Hematite Chemical Formula

While comparing Sellaite and Hematite 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 Sellaite and Hematite chemical formula.

Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.
Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)

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Sellaite and Hematite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sellaite and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sellaite and Hematite Optical Properties during the identification of gemstone. Specific gravity of Sellaite is 5.00-5.30 whereas that of Hematite is 5.00-5.30.