Fluorite and Calcite Physical Properties

Fluorite

Calcite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

slightly water soluble and in hot hydrochloric acid

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.00-3.252.67-2.73

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Octahedral, perfect on {111}, parting on {011}

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

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

CaF₂

CaCO 3Ulrich Henn and Claudio C.

Fluorite and Calcite Chemical Formula

While comparing Fluorite 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 Fluorite and Calcite chemical formula.

Chemical formula of Fluorite- CaF₂
Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

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Fluorite and Calcite Specific Gravity

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