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Ettringite
Ettringite

Sphene
Sphene



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Ettringite
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Sphene

Ettringite and Sphene 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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-9999
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Perfect
-9999
CaTiSiO5

Ettringite and Sphene Chemical Formula

While comparing Ettringite and Sphene 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 Sphene chemical formula.

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Ettringite and Sphene Specific Gravity

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