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Phlogopite
Phlogopite

Marcasite
Marcasite



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Phlogopite
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Marcasite

Phlogopite and Marcasite 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
 
-
-
-
4.80-4.90
Uneven
{010} Indistinct
6-6.5
FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Phlogopite and Marcasite Chemical Formula

While comparing Phlogopite and Marcasite 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 Marcasite chemical formula.

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Phlogopite and Marcasite Specific Gravity

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