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Kyanite
Kyanite

Staurolite
Staurolite



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Kyanite
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Staurolite

Kyanite and Staurolite Physical Properties

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
 
Brittle
-
-
3.7-3.8
Subconchoidal, Conchoidal
Distinct on {010}
7-7.5
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

Kyanite and Staurolite Chemical Formula

While comparing Kyanite and Staurolite 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 Staurolite chemical formula.

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Kyanite and Staurolite Specific Gravity

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