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Ettringite
Ettringite

Iolite
Iolite



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Ettringite
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Iolite

Ettringite 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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Partially soluble in water
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1.77
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Perfect on {10 1 0}
2-2.5
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
 
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-
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2.6-2.7
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3,1
7-7.5
Mg2Al4Si5O18

Ettringite and Iolite Chemical Formula

While comparing Ettringite 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 Ettringite and Iolite chemical formula.

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Ettringite and Iolite Specific Gravity

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