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Norbergite
Norbergite

Sellaite
Sellaite



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Norbergite
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Sellaite

Norbergite and Sellaite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.177
Uneven, Conchoidal
{???} Distinct
6-6.5
Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
 
Brittle
-
-
3.14-3.16
Conchoidal
Perfect on {010} and {110}
5-5.5
MgF 2Ulrich Henn and Claudio C.

Norbergite and Sellaite Chemical Formula

While comparing Norbergite 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 Norbergite and Sellaite chemical formula.

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Norbergite and Sellaite Specific Gravity

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