Malachite and Apatite Physical Properties

Malachite

Apatite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.25-4.103.16-3.23

1 7.18

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Fracture

Conchoidal, Uneven

Conchoidal, Uneven, Conchoidal to uneven

Cleavage

Perfect on { 2 01} fair on {010}

[0001] indistinct, [1010] indistinct

Mohs Hardness

3.5-45

2 10

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Chemical Composition

Cu₂CO₃(OH)₂

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

Malachite and Apatite Chemical Formula

While comparing Malachite 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 Malachite and Apatite chemical formula.

Chemical formula of Malachite- Cu₂CO₃(OH)₂
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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Malachite and Apatite Specific Gravity

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