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Apophyllite KF
Apophyllite KF

Gahnite
Gahnite



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Apophyllite KF
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Gahnite

Apophyllite KF and Gahnite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
2.33-2.37
Uneven
Perfect on {001}, imperfect on {110}
4.5-5
(K,Na)Ca4Si8O20(F,OH)•8(H2O)
 
-
-
-
4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Apophyllite KF and Gahnite Chemical Formula

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

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Apophyllite KF and Gahnite Specific Gravity

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