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Fluorapatite
Fluorapatite

Blue John
Blue John



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Fluorapatite
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Blue John

Fluorapatite and Blue John Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.1-3.25
Uneven
Indistinct
5
Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)
 
-
-
-
3.00-3.25
-
Perfect
-9999
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Fluorapatite and Blue John Chemical Formula

While comparing Fluorapatite and Blue John 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 Fluorapatite and Blue John chemical formula.

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Fluorapatite and Blue John Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fluorapatite and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fluorapatite Vs Blue John during the identification of gemstone. Specific gravity of Fluorapatite is whereas that of Blue John is .