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Epidote
Epidote

Iolite
Iolite



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Epidote
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Iolite

Epidote and Iolite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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-
-
3.25-3.50
Conchoidal, Fibrous
{001} perfect and {100} imperfect
6-7
CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
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-
-
2.6-2.7
-
3,1
7-7.5
Mg2Al4Si5O18

Epidote and Iolite Chemical Formula

While comparing Epidote and Iolite 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 Epidote and Iolite chemical formula.

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Epidote and Iolite Specific Gravity

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