Edenite and Pargasite Physical Properties

Edenite

Pargasite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.05-3.373.04-3.26

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Splintery, Brittle, Uneven

1.6 Cleavage

Good on (110)

{110} perfect

1.7 Mohs Hardness

5-65-6

2 10

1.8 Chemical Composition

NaCa2Mg5Si7AlO22(OH)2

NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Edenite and Pargasite Chemical Formula

While comparing Edenite 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 Edenite and Pargasite chemical formula.

Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2
Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Edenite and Pargasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Edenite and Pargasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Edenite and Pargasite Optical Properties during the identification of gemstone. Specific gravity of Edenite is 3.04-3.26 whereas that of Pargasite is 3.04-3.26.