Bytownite and Pargasite Physical Properties

Bytownite

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

2.72-2.753.04-3.26

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Splintery, Brittle, Uneven

1.6 Cleavage

Perfect on [001], good on [010], imperfect on [110]

{110} perfect

1.7 Mohs Hardness

6-6.55-6

2 10

1.8 Chemical Composition

Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Bytownite and Pargasite Chemical Formula

While comparing Bytownite 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 Bytownite and Pargasite chemical formula.

Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Bytownite and Pargasite Specific Gravity

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