Variscite and Apatite Physical Properties

Variscite

Apatite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.42-2.583.16-3.23

1 7.18

1.5 Fracture

Conchoidal, Splintery, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven

1.6 Cleavage

[010] perfect

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

4-55

2 10

1.8 Chemical Composition

AlPO₄ · 2(H₂O)

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

Variscite and Apatite Chemical Formula

While comparing Variscite 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 Variscite and Apatite chemical formula.

Chemical formula of Variscite- AlPO₄ · 2(H₂O)
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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Variscite Vs Aragonite

Variscite and Apatite Specific Gravity

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