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Apophyllite KF and Kyanite Physical Properties


Kyanite and Apophyllite KF Physical Properties


Physical Properties

Tenacity
Brittle   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.33-2.37   
3.53-3.65   

Fracture
Uneven, Brittle, Uneven, Brittle, Uneven   
Splintery, Brittle, Metallic   

Cleavage
Perfect on {001}, imperfect on {110}   
[100] perfect [010] imperfect with 79° angle between   

Mohs Hardness
4.5-5   
4-7   

Chemical Composition
(K,Na)Ca4Si8O20(F,OH)•8(H2O)   
Not Available   

Optical Properties >>
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Apophyllite KF and Kyanite Chemical Formula

While comparing Apophyllite KF and Kyanite 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 Kyanite chemical formula.

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Apophyllite KF and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apophyllite KF and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite KF and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite KF is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.

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