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Arfvedsonite
Arfvedsonite

Covellite
Covellite



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Arfvedsonite
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Covellite

Arfvedsonite and Covellite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Flexible
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.3-3.5
4.6-4.76
1.5 Fracture
Uneven, Brittle, Metallic, Brittle, Metallic
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
1.6 Cleavage
Perfect on [110]
Perfect on {0001}
1.7 Mohs Hardness
5-6
Not Available
1.8 Chemical Composition
NaNa2(Fe++4Fe+++)Si8O22(OH)2
CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references

Arfvedsonite and Covellite Chemical Formula

While comparing Arfvedsonite 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 Arfvedsonite and Covellite chemical formula.

  • Chemical formula of Arfvedsonite- NaNa2(Fe++4Fe+++)Si8O22(OH)2
  • Chemical formula of Covellite- CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references

Arfvedsonite and Covellite Specific Gravity

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