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Fluorite and Polyhalite Physical Properties


Polyhalite and Fluorite Physical Properties


Physical Properties

Tenacity
Brittle   
Brittle   

Solubility
slightly water soluble and in hot hydrochloric acid   
Soluble   

Durability
Not Available   
Not Available   

Specific Gravity
3.00-3.25   
2.78   

Fracture
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references   
Conchoidal, Brittle   

Cleavage
Octahedral, perfect on {111}, parting on {011}   
Perfect on {10 1 }; parting on {010}   

Mohs Hardness
4   
3.5   

Chemical Composition
CaF2   
Not Available   

Optical Properties >>
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Fluorite and Polyhalite Chemical Formula

While comparing Fluorite 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 Fluorite and Polyhalite chemical formula.

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Fluorite and Polyhalite Specific Gravity

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

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