Apophyllite and Natrolite Physical Properties

Apophyllite

Natrolite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.30-2.50

2.20-2.26

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009)

Uneven, Brittle, Metallic, Gemstones (2009)

1.6 Cleavage

Perfect on (001)

Perfect on {110}

1.7 Mohs Hardness

4.5-5

5-5.5

1.8 Chemical Composition

KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

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

Apophyllite and Natrolite Chemical Formula

While comparing Apophyllite 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 Apophyllite and Natrolite chemical formula.

Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Chemical formula of Natrolite- Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Apophyllite and Natrolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apophyllite and Natrolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite and Natrolite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite is 2.20-2.26 whereas that of Natrolite is 2.20-2.26.