Hercynite and Apophyllite KF Physical Properties

Hercynite

Apophyllite KF

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

4.39

Uneven

{111} Indistinct, {111} Indistinct, {111} Indistinct

7.5-8

Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

Brittle

2.33-2.37

Uneven

Perfect on {001}, imperfect on {110}

4.5-5

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

Hercynite and Apophyllite KF Chemical Formula

While comparing Hercynite and Apophyllite KF 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 Hercynite and Apophyllite KF chemical formula.

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Hercynite and Apophyllite KF Specific Gravity

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