Natrolite and Apatite Physical Properties

Natrolite

Apatite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.20-2.263.16-3.23

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic, Gemstones (2009)

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

1.6 Cleavage

Perfect on {110}

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

5-5.55

2 10

1.8 Chemical Composition

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

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

Natrolite and Apatite Chemical Formula

While comparing Natrolite 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 Natrolite and Apatite chemical formula.

Chemical formula of Natrolite- Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Compare White Gemstones

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Natrolite and Apatite Specific Gravity

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