Covellite and Pargasite Physical Properties

Covellite

Pargasite

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1 Physical Properties

1.1 Tenacity

Flexible

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.6-4.763.04-3.26

1 7.18

1.5 Fracture

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

Splintery, Brittle, Uneven

1.6 Cleavage

Perfect on {0001}

{110} perfect

1.7 Mohs Hardness

Not Available5-6

2 10

1.8 Chemical Composition

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

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

Covellite and Pargasite Chemical Formula

While comparing Covellite 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 Covellite and Pargasite chemical formula.

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

Compare Blue Gemstones

Covellite Vs Elbaite

Covellite Vs Falcons Eye

Covellite Vs Fluorapatite

Covellite and Pargasite Specific Gravity

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