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Fayalite
Fayalite

Pargasite
Pargasite



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Fayalite
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Pargasite

Fayalite and Pargasite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
4.392
Conchoidal
{010} moderate, {100} imperfect
6.5-7
Fe 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
 
-
-
-
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)

Fayalite and Pargasite Chemical Formula

While comparing Fayalite 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 Fayalite and Pargasite chemical formula.

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Fayalite and Pargasite Specific Gravity

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