Apatite and Zinnwaldite Physical Properties

Apatite

Zinnwaldite

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1 Physical Properties

1.1 Tenacity

Not Available

Elastic

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.16-3.23

2.9-3.1

1.5 Fracture

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

Uneven

1.6 Cleavage

[0001] indistinct, [1010] indistinct

Perfect basal {001}

1.7 Mohs Hardness

3.5-4.0

1.8 Chemical Composition

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

Not Available

Apatite and Zinnwaldite Chemical Formula

While comparing Apatite and Zinnwaldite 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 Apatite and Zinnwaldite chemical formula.

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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Apatite and Zinnwaldite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Zinnwaldite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Zinnwaldite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 2.9-3.1 whereas that of Zinnwaldite is 2.9-3.1.