Jacobsite and Covellite Physical Properties

Jacobsite

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

4.76-5.034.6-4.76

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

None

Perfect on {0001}

1.7 Mohs Hardness

5.5-6.5Not Available

2 10

1.8 Chemical Composition

(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

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

Jacobsite and Covellite Chemical Formula

While comparing Jacobsite 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 Jacobsite and Covellite chemical formula.

Chemical formula of Jacobsite- (Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Jacobsite and Covellite Specific Gravity

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