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Riebeckite
Riebeckite

Gahnite
Gahnite



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Riebeckite
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Gahnite

Riebeckite and Gahnite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.28-3.44
Uneven, Splintery
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
5.0-6.0
Na2Fe2+3Fe3+2Si8O22(OH)2
 
-
-
-
4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Riebeckite and Gahnite Chemical Formula

While comparing Riebeckite 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 Riebeckite and Gahnite chemical formula.

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Riebeckite and Gahnite Specific Gravity

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