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Andradite
Andradite

Pollucite
Pollucite



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Andradite
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Pollucite

Andradite and Pollucite 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)
 
Brittle
Readily soluble in HF
-
2.86-2.94
Conchoidal, Uneven
None observed
6.5-7
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Andradite and Pollucite Chemical Formula

While comparing Andradite and Pollucite 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 Pollucite chemical formula.

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Andradite and Pollucite Specific Gravity

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