Vesuvianite and Apatite Physical Properties

Vesuvianite

Apatite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.32-3.433.16-3.23

1 7.18

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Fracture

Conchoidal

Conchoidal, Uneven, Conchoidal to uneven

Cleavage

Poor on {110} and {100} very poor on {001}

[0001] indistinct, [1010] indistinct

Mohs Hardness

6-75

2 10

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Chemical Composition

Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4

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

Vesuvianite and Apatite Chemical Formula

While comparing Vesuvianite 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 Vesuvianite and Apatite chemical formula.

Chemical formula of Vesuvianite- Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4
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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Vesuvianite and Apatite Specific Gravity

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