Apatite and Amazonite Physical Properties

Apatite

Amazonite

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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

3.16-3.23

2.55-2.57

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

[0001] indistinct, [1010] indistinct

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

1.7 Mohs Hardness

6-6.5

1.8 Chemical Composition

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

KAlSi₃O₈

Apatite and Amazonite Chemical Formula

While comparing Apatite and Amazonite 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 Amazonite 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
Chemical formula of Amazonite- KAlSi₃O₈

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Apatite and Amazonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Amazonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Amazonite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 2.55-2.57 whereas that of Amazonite is 2.55-2.57.