Shungite and Fluorapatite Physical Properties
Tenacity
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Solubility
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Durability
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Specific Gravity
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3.1-3.25
  
Fracture
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Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
  
Cleavage
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Indistinct
  
Mohs Hardness
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5
  
Chemical Composition
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Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)
  
Shungite and Fluorapatite Chemical Formula
While comparing Shungite and Fluorapatite 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 Shungite and Fluorapatite chemical formula.
>- Chemical formula of Fluorapatite- Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)
Shungite and Fluorapatite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Shungite and Fluorapatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Shungite and Fluorapatite Optical Properties during the identification of gemstone. Specific gravity of Shungite is 3.1-3.25 whereas that of Fluorapatite is 3.1-3.25.