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Ettringite
Ettringite

Nepheline
Nepheline



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Ettringite
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Nepheline

Ettringite and Nepheline Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
Partially soluble in water
-
1.77
-
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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-
-
2.55-2.65
Subconchoidal, Conchoidal
[1010] Poor
5-6
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

Ettringite and Nepheline Chemical Formula

While comparing Ettringite and Nepheline 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 Nepheline chemical formula.

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Ettringite and Nepheline Specific Gravity

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