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Andradite
Andradite

Omphacite
Omphacite



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Andradite
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Omphacite

Andradite and Omphacite 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)
 
-
-
-
3.16-3.43
Uneven, Conchoidal
{110} Good, {110} Good
5-6
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

Andradite and Omphacite Chemical Formula

While comparing Andradite and Omphacite 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 Omphacite chemical formula.

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Andradite and Omphacite Specific Gravity

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