Amazonite and Apatite Physical Properties

Amazonite

Apatite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.55-2.573.16-3.23

1 7.18

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Fracture

Uneven

Conchoidal, Uneven, Conchoidal to uneven

Cleavage

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

[0001] indistinct, [1010] indistinct

Mohs Hardness

6-6.55

2 10

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Chemical Composition

KAlSi₃O₈

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

Amazonite and Apatite Chemical Formula

While comparing Amazonite 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 Amazonite and Apatite chemical formula.

Chemical formula of Amazonite- KAlSi₃O₈
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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Amazonite and Apatite Specific Gravity

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