Apophyllite and Benitoite Physical Properties

Apophyllite

Benitoite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Insoluble: HCl

1.3 Durability

Not Available

1.4 Specific Gravity

2.30-2.503.61-3.68

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009)

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

Perfect on (001)

[10 1 1] poor

1.7 Mohs Hardness

4.5-56-6.5

2 10

1.8 Chemical Composition

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

BaTiSi 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Apophyllite and Benitoite Chemical Formula

While comparing Apophyllite and Benitoite 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 Benitoite chemical formula.

Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Chemical formula of Benitoite- BaTiSi 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Apophyllite and Benitoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apophyllite and Benitoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite and Benitoite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite is 3.61-3.68 whereas that of Benitoite is 3.61-3.68.