Mellite and Covellite Physical Properties

Mellite

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

1.58-1.604.6-4.76

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

{011} Imperfect

Perfect on {0001}

1.7 Mohs Hardness

2Not Available

2 10

1.8 Chemical Composition

Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.

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

Mellite and Covellite Chemical Formula

While comparing Mellite 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 Mellite and Covellite chemical formula.

Chemical formula of Mellite- Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare Brown Gemstones

Mellite Vs Narsarsukite

Mellite Vs Mother of Pearl

Mellite Vs Morion

Mellite and Covellite Specific Gravity

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