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Simpsonite and Blue John Physical Properties


Blue John and Simpsonite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
Not Available   
3.00-3.25   

Fracture
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal   
Not Available   

Cleavage
None   
Not Available   

Mohs Hardness
7-7.5   
Not Available   

Chemical Composition
Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.   
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Simpsonite and Blue John Chemical Formula

While comparing Simpsonite and Blue John 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 Simpsonite and Blue John chemical formula.

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Simpsonite and Blue John Specific Gravity

Another important criteria for qualitative analysis of gemstones is Simpsonite and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Simpsonite and Blue John Optical Properties during the identification of gemstone. Specific gravity of Simpsonite is 3.00-3.25 whereas that of Blue John is 3.00-3.25.

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