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Phlogopite
Phlogopite

Pargasite
Pargasite



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Phlogopite
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Pargasite

Phlogopite and Pargasite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Tough
-
-
2.78-2.85
Uneven
Perfect basal (001)
2-2.5
KMg3(Si3Al)O10(F,OH)2
 
-
-
-
3.04-3.26
Splintery, Uneven
{110} perfect
5-6
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Phlogopite and Pargasite Chemical Formula

While comparing Phlogopite and Pargasite 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 Phlogopite and Pargasite chemical formula.

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Phlogopite and Pargasite Specific Gravity

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