Biotite and Cuprite Physical Properties
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.7-3.3
5.85-6.15
Fracture
Uneven, Even, Yellow, White
Conchoidal, Metallic, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Perfect on the {001}
Fair in four directions forming octahedrons
Mohs Hardness
2.5-3.0
3.5-4
Chemical Composition
K(Mg,Fe++)3[AlSi3O10(OH,F)2
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Biotite and Cuprite Chemical Formula
While comparing Biotite and Cuprite 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 Biotite and Cuprite chemical formula.
- Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
- Chemical formula of Cuprite- Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Biotite and Cuprite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Biotite and Cuprite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Cuprite Optical Properties during the identification of gemstone. Specific gravity of Biotite is 5.85-6.15 whereas that of Cuprite is 5.85-6.15.