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Kyanite
Kyanite

Poldervaartite
Poldervaartite



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Kyanite
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Poldervaartite

Kyanite and Poldervaartite 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
 
-
-
-
2.91
-
None
-9999
(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

Kyanite and Poldervaartite Chemical Formula

While comparing Kyanite and Poldervaartite 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 Poldervaartite chemical formula.

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Kyanite and Poldervaartite Specific Gravity

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