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Starlite and Polyhalite Physical Properties


Polyhalite and Starlite Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Soluble   

Durability
Not Available   
Not Available   

Specific Gravity
3.91-4.73   
2.78   

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

Cleavage
Not Available   
Perfect on {10 1 }; parting on {010}   

Mohs Hardness
6.5-7.5   
3.5   

Chemical Composition
ZrSiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)   
Not Available   

Optical Properties >>
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Starlite and Polyhalite Chemical Formula

While comparing Starlite and Polyhalite 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 Starlite and Polyhalite chemical formula.

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Starlite and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Starlite and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Starlite and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Starlite is 2.78 whereas that of Polyhalite is 2.78.

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