Apophyllite and Phenakite Physical Properties

Apophyllite

Phenakite

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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

2.30-2.502.90-2.98

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009)

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle

1.6 Cleavage

Perfect on (001)

Distinct on {11 2 0}, imperfect on {10 1 1}

1.7 Mohs Hardness

4.5-57.5-8

2 10

1.8 Chemical Composition

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

Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Apophyllite and Phenakite Chemical Formula

While comparing Apophyllite and Phenakite 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 Phenakite chemical formula.

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

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Apophyllite and Phenakite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apophyllite and Phenakite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite and Phenakite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite is 2.90-2.98 whereas that of Phenakite is 2.90-2.98.