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Kyanite
Kyanite

Feldspar
Feldspar



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Kyanite
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Feldspar

Kyanite and Feldspar Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.53-3.65
Splintery
[100] perfect [010] imperfect with 79° angle between
4-7
Al2SiO5
 
-
-
-
2.56-2.75
Uneven, Conchoidal
two or three
6-6.5
KAlSi3O8

Kyanite and Feldspar Chemical Formula

While comparing Kyanite and Feldspar 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 Kyanite and Feldspar chemical formula.

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Kyanite and Feldspar Specific Gravity

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