Narsarsukite and Covellite Physical Properties

Narsarsukite

Covellite

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1 Physical Properties

1.1 Tenacity

Brittle

Flexible

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.72-2.834.6-4.76

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

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

1.6 Cleavage

Good on {100} and {110}

Perfect on {0001}

1.7 Mohs Hardness

6-7Not Available

2 10

1.8 Chemical Composition

Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.

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

Narsarsukite and Covellite Chemical Formula

While comparing Narsarsukite 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 Narsarsukite and Covellite chemical formula.

Chemical formula of Narsarsukite- Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Narsarsukite and Covellite Specific Gravity

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