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Riebeckite
Riebeckite

Sellaite
Sellaite



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Riebeckite
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Sellaite

Riebeckite and Sellaite 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
 
Brittle
-
-
3.14-3.16
Conchoidal
Perfect on {010} and {110}
5-5.5
MgF 2Ulrich Henn and Claudio C.

Riebeckite and Sellaite Chemical Formula

While comparing Riebeckite and Sellaite 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 Sellaite chemical formula.

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Riebeckite and Sellaite Specific Gravity

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