Pargasite and Austinite Physical Properties

Pargasite

Austinite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Easily soluble in cold dilute HCl

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.264.12

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

{110} perfect

Good in two directions parallel to the prism faces {110}

1.7 Mohs Hardness

5-64-4.5

2 10

1.8 Chemical Composition

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

CaZn(AsO4)(OH)

Pargasite and Austinite Chemical Formula

While comparing Pargasite and Austinite 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 Pargasite and Austinite chemical formula.

Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Austinite- CaZn(AsO4)(OH)

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Pargasite and Austinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Austinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Austinite Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 4.12 whereas that of Austinite is 4.12.