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Sellaite
Sellaite

Norbergite
Norbergite



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Sellaite
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Norbergite

Sellaite and Norbergite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

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

Sellaite and Norbergite Chemical Formula

While comparing Sellaite and Norbergite 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 Sellaite and Norbergite chemical formula.

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Sellaite and Norbergite Specific Gravity

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