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Alunite and Fluorite Physical Properties


Fluorite and Alunite Physical Properties


Physical Properties

Tenacity
Brittle   
Brittle   

Solubility
Soluble   
slightly water soluble and in hot hydrochloric acid   

Durability
Not Available   
Not Available   

Specific Gravity
2.6-2.9   
3.00-3.25   

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

Cleavage
On {0001}, perfect   
Octahedral, perfect on {111}, parting on {011}   

Mohs Hardness
3.5-4   
4   

Chemical Composition
KAl3(SO4)2(OH)6   
CaF2   

Optical Properties >>
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Alunite and Fluorite Chemical Formula

While comparing Alunite and Fluorite 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 Alunite and Fluorite chemical formula.

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Alunite and Fluorite Specific Gravity

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

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