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Feldspar
Feldspar

Pyrite
Pyrite



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Feldspar
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Pyrite

Feldspar and Pyrite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.56-2.75
Uneven, Conchoidal
two or three
6-6.5
KAlSi3O8
 
Brittle
insoluble in water
-
5.00-5.20
Uneven, Conchoidal, ConchoidalWalter Schumann
Indistinct on {001}; partings on {011} and {111}
6-6.5
FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Feldspar and Pyrite Chemical Formula

While comparing Feldspar and Pyrite 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 Feldspar and Pyrite chemical formula.

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Feldspar and Pyrite Specific Gravity

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