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Covellite
Covellite

Willemite
Willemite



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Covellite
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Willemite

Covellite and Willemite Physical Properties

1 Physical Properties
1.1 Tenacity
Flexible
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
4.6-4.763.89-4.18
Amber
1 7.18
1.5 Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven
1.6 Cleavage
Perfect on {0001}
{0001}, {11 2 0} imperfect
1.7 Mohs Hardness
Not Available5.5
Amber
2 10
1.8 Chemical Composition
CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references
Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Covellite and Willemite Chemical Formula

While comparing Covellite and Willemite 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 Covellite and Willemite chemical formula.

  • Chemical formula of Covellite- CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references
  • Chemical formula of Willemite- Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Covellite and Willemite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Covellite and Willemite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Covellite and Willemite Optical Properties during the identification of gemstone. Specific gravity of Covellite is 3.89-4.18 whereas that of Willemite is 3.89-4.18.