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Kyanite and Thulite Physical Properties


Thulite and Kyanite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.53-3.65   
3.1   

Fracture
Splintery, Brittle, Metallic   
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)   

Cleavage
[100] perfect [010] imperfect with 79° angle between   
Perfect {010} imperfect {100}   

Mohs Hardness
4-7   
6-7   

Chemical Composition
Not Available   
Ca2Al3(SiO4)3(OH)   

Optical Properties >>
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Kyanite and Thulite Chemical Formula

While comparing Kyanite and Thulite 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 Thulite chemical formula.

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Kyanite and Thulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Thulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Thulite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 3.1 whereas that of Thulite is 3.1.

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