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Ettringite
Ettringite

Pargasite
Pargasite



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Ettringite
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Pargasite

Ettringite and Pargasite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
Partially soluble in water
-
1.77
-
Perfect on {10 1 0}
2-2.5
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
 
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-
-
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)

Ettringite and Pargasite Chemical Formula

While comparing Ettringite 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 Ettringite and Pargasite chemical formula.

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Ettringite and Pargasite Specific Gravity

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