Augite and Covellite Physical Properties

Augite

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

3.19-3.564.6-4.76

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

{110} Perfect, {010} Indistinct

Perfect on {0001}

1.7 Mohs Hardness

5.5-6Not Available

2 10

1.8 Chemical Composition

(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

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

Augite and Covellite Chemical Formula

While comparing Augite 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 Augite and Covellite chemical formula.

Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Augite and Covellite Specific Gravity

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