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Andradite
Andradite

Cinnabar
Cinnabar



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Andradite
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Cinnabar

Andradite and Cinnabar 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)
 
Slightly sectile
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
-
2
Uneven
Prismatic {10 1 0}, perfect
2-2.5
HgSMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Andradite and Cinnabar Chemical Formula

While comparing Andradite and Cinnabar 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 Cinnabar chemical formula.

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Andradite and Cinnabar Specific Gravity

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