Calcite and Fluorite Physical Properties

Calcite

Fluorite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

slightly water soluble and in hot hydrochloric acid

1.3 Durability

Not Available

1.4 Specific Gravity

2.67-2.733.00-3.25

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

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

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

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

CaF₂

Calcite and Fluorite Chemical Formula

While comparing Calcite and Fluorite 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 Calcite and Fluorite chemical formula.

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

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Calcite and Fluorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Calcite and Fluorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Fluorite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 3.00-3.25 whereas that of Fluorite is 3.00-3.25.