Pargasite and Covellite Physical Properties

Pargasite

Covellite

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1 Physical Properties

1.1 Tenacity

Not Available

Flexible

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.264.6-4.76

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

1.6 Cleavage

{110} perfect

Perfect on {0001}

1.7 Mohs Hardness

5-6Not Available

2 10

1.8 Chemical Composition

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

CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

Pargasite and Covellite Chemical Formula

While comparing Pargasite and Covellite 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 Covellite chemical formula.

Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare Green Gemstones

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Pargasite Vs Powellite

Pargasite Vs Prasiolite

Pargasite and Covellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Covellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Covellite Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 4.6-4.76 whereas that of Covellite is 4.6-4.76.