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Andradite
Andradite

Norbergite
Norbergite



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Andradite
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Norbergite

Andradite and Norbergite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.70-4.10
Conchoidal, Uneven
none
6.5-7
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
 
-
-
-
3.177
Uneven, Conchoidal
{???} Distinct
6-6.5
Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)

Andradite and Norbergite Chemical Formula

While comparing Andradite 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 Andradite and Norbergite chemical formula.

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Andradite and Norbergite Specific Gravity

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