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Marcasite
Marcasite

Gahnite
Gahnite



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Marcasite
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Gahnite

Marcasite and Gahnite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
4.80-4.90
Uneven
{010} Indistinct
6-6.5
FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
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-
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4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Marcasite and Gahnite Chemical Formula

While comparing Marcasite 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 Marcasite and Gahnite chemical formula.

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Marcasite and Gahnite Specific Gravity

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