Franklinite and Covellite Physical Properties

Franklinite

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

5.05-5.224.6-4.76

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

None

Perfect on {0001}

1.7 Mohs Hardness

5.5-6Not Available

2 10

1.8 Chemical Composition

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

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

Franklinite and Covellite Chemical Formula

While comparing Franklinite 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 Franklinite and Covellite chemical formula.

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

Compare Red Gemstones

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Franklinite Vs Hibonite

Franklinite Vs Hydrogrossular

Franklinite and Covellite Specific Gravity

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