Fluorite and Apatite Physical Properties

Fluorite

Apatite

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Physical Properties

Tenacity

Brittle

Solubility

slightly water soluble and in hot hydrochloric acid

Durability

Specific Gravity

3.00-3.253.16-3.23

1 7.18

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Fracture

Subconchoidal, Uneven, ConchoidalWalter Schumann

Conchoidal, Uneven, Conchoidal to uneven

Cleavage

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

[0001] indistinct, [1010] indistinct

Mohs Hardness

2 10

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Chemical Composition

CaF₂

Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Fluorite and Apatite Chemical Formula

While comparing Fluorite and Apatite 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 Apatite chemical formula.

Chemical formula of Fluorite- CaF₂
Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

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Fluorite and Apatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fluorite and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fluorite and Apatite Optical Properties during the identification of gemstone. Specific gravity of Fluorite is 3.16-3.23 whereas that of Apatite is 3.16-3.23.