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Sard and Polyhalite Physical Properties


Polyhalite and Sard Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Soluble   

Durability
Not Available   
Not Available   

Specific Gravity
2.58-2.63   
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   
3.5   

Chemical Composition
SiO 2Ulrich Henn and Claudio C.   
Not Available   

Optical Properties >>
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Sard and Polyhalite Chemical Formula

While comparing Sard 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 Sard and Polyhalite chemical formula.

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Sard and Polyhalite Specific Gravity

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

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