Fluorite and Cordierite Physical Properties

Fluorite

Cordierite

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Physical Properties

Tenacity

Brittle

Solubility

slightly water soluble and in hot hydrochloric acid

Durability

Specific Gravity

3.00-3.252.57-2.66

1 7.18

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Fracture

Subconchoidal, Uneven, ConchoidalWalter Schumann

Subconchoidal, Conchoidal

Cleavage

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

Fair on {100}, poor on {001} and {010}

Mohs Hardness

47-7.5

2 10

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Chemical Composition

CaF₂

Mg2Al4Si5O18

Fluorite and Cordierite Chemical Formula

While comparing Fluorite and Cordierite 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 Cordierite chemical formula.

Chemical formula of Fluorite- CaF₂
Chemical formula of Cordierite- Mg2Al4Si5O18

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Fluorite and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fluorite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fluorite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Fluorite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.