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Kutnohorite and Afghanite Physical Properties


Afghanite and Kutnohorite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Soluble   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.12   
2.55-2.65   

Fracture
Subconchoidal, Brittle, Conchoidal   
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle   

Cleavage
Perfect on {10 1 1}   
Perfect {10 1 0}   

Mohs Hardness
3-4   
5.5-6   

Chemical Composition
Not Available   
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)   

Optical Properties >>
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Kutnohorite and Afghanite Chemical Formula

While comparing Kutnohorite and Afghanite 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 Kutnohorite and Afghanite chemical formula.

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Kutnohorite and Afghanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kutnohorite and Afghanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kutnohorite and Afghanite Optical Properties during the identification of gemstone. Specific gravity of Kutnohorite is 2.55-2.65 whereas that of Afghanite is 2.55-2.65.

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Brown Gemstones


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