Afghanite and Kyanite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.65
3.53-3.65
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle
Splintery, Brittle, Metallic
Cleavage
Perfect {10 1 0}
[100] perfect [010] imperfect with 79° angle between
Chemical Composition
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Not Available
Afghanite and Kyanite Chemical Formula
While comparing Afghanite and Kyanite 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 Afghanite and Kyanite chemical formula.
- Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
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Afghanite and Kyanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Afghanite and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.