Pargasite and Kyanite Physical Properties

Pargasite

Kyanite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.263.53-3.65

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

Splintery, Brittle, Metallic

1.6 Cleavage

{110} perfect

[100] perfect [010] imperfect with 79° angle between

1.7 Mohs Hardness

5-64-7

2 10

1.8 Chemical Composition

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

Not Available

Pargasite and Kyanite Chemical Formula

While comparing Pargasite and Kyanite 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 Kyanite 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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Pargasite and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.