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Kyanite
Kyanite

Eosphorite
Eosphorite



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Kyanite
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Eosphorite

Kyanite and Eosphorite 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
 
-
-
-
3.05-3.08
Subconchoidal, Uneven, Conchoidal
Poor on {100}
5
Mn2+ Al(PO 4)(OH) 2H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Kyanite and Eosphorite Chemical Formula

While comparing Kyanite and Eosphorite 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 Eosphorite chemical formula.

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Kyanite and Eosphorite Specific Gravity

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