Apatite and Natrolite Physical Properties

Apatite

Natrolite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.16-3.23

Conchoidal, Uneven, Conchoidal to uneven

[0001] indistinct, [1010] indistinct

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

Brittle

2.20-2.26

Uneven

Perfect on {110}

5-5.5

Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Apatite and Natrolite Chemical Formula

While comparing Apatite and Natrolite 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 Natrolite chemical formula.

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Apatite and Natrolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Natrolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite Vs Natrolite during the identification of gemstone. Specific gravity of Apatite is whereas that of Natrolite is .