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Fluorapatite
Fluorapatite

Gahnite
Gahnite



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Fluorapatite
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Gahnite

Fluorapatite and Gahnite 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)
 
-
-
-
4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Fluorapatite and Gahnite Chemical Formula

While comparing Fluorapatite and Gahnite 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 Gahnite chemical formula.

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Fluorapatite and Gahnite Specific Gravity

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