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Erythrite
Erythrite

Pargasite
Pargasite



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Erythrite
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Pargasite

Erythrite and Pargasite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Sectile
-
-
3.06
Sectile
Perfect on {010}; poor on {100} and { 1 02}.
-9999
Co3(AsO4)2•8(H2O)
 
-
-
-
3.04-3.26
Splintery, Uneven
{110} perfect
5-6
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Erythrite and Pargasite Chemical Formula

While comparing Erythrite and Pargasite 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 Erythrite and Pargasite chemical formula.

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Erythrite and Pargasite Specific Gravity

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