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Hercynite and Afghanite Physical Properties


Afghanite and Hercynite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
4.39   
2.55-2.65   

Fracture
ConchoidalGemdat.org, Uneven   
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle   

Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct   
Perfect {10 1 0}   

Mohs Hardness
7.5-8   
5.5-6   

Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)   
(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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Hercynite and Afghanite Chemical Formula

While comparing Hercynite 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 Hercynite and Afghanite chemical formula.

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Hercynite and Afghanite Specific Gravity

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

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