Hollandite and Covellite Physical Properties
Tenacity
Not Available
Flexible
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
5.05
4.6-4.76
Fracture
Brittle, Metallic
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Cleavage
Distinct / Good, Prismatic
Perfect on {0001}
Mohs Hardness
4-6
Not Available
Chemical Composition
Ba(Mn++++,Mn++)8O16
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Hollandite and Covellite Chemical Formula
While comparing Hollandite 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 Hollandite and Covellite chemical formula.
- Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
- Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Hollandite and Covellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hollandite and Covellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Covellite Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 4.6-4.76 whereas that of Covellite is 4.6-4.76.