Hematite and Calcite Physical Properties

Hematite

Calcite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

5.00-5.302.67-2.73

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

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

Perfect on [10 1 1] three directions with angle of 74° 55

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

Fe 2O 3Arthur Thomas , Gemstones (2009)

CaCO 3Ulrich Henn and Claudio C.

Hematite and Calcite Chemical Formula

While comparing Hematite and Calcite 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 Calcite chemical formula.

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

Compare Gems for Aquarius

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Hematite and Calcite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hematite and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hematite and Calcite Optical Properties during the identification of gemstone. Specific gravity of Hematite is 2.67-2.73 whereas that of Calcite is 2.67-2.73.