Zinnwaldite and Pargasite Physical Properties

Zinnwaldite

Pargasite

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1 Physical Properties

1.1 Tenacity

Elastic

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.9-3.13.04-3.26

1 7.18

1.5 Fracture

Uneven

Splintery, Brittle, Uneven

1.6 Cleavage

Perfect basal {001}

{110} perfect

1.7 Mohs Hardness

3.5-4.05-6

2 10

1.8 Chemical Composition

Not Available

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

Zinnwaldite and Pargasite Chemical Formula

While comparing Zinnwaldite 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 Zinnwaldite and Pargasite chemical formula.

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

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Zinnwaldite and Pargasite Specific Gravity

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