Bornite and Rubellite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
5.06-5.08
3.01-3.06
Fracture
Uneven, Subconchoidal, Conchoidal, Brittle
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Poor on [111].
Not Available
Mohs Hardness
3-3.25
7-7.5
Chemical Composition
Cu5FeS4
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Bornite and Rubellite Chemical Formula
While comparing Bornite and Rubellite 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 Bornite and Rubellite chemical formula.
- Chemical formula of Bornite- Cu5FeS4
- Chemical formula of Rubellite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Bornite and Rubellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bornite and Rubellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bornite and Rubellite Optical Properties during the identification of gemstone. Specific gravity of Bornite is 3.01-3.06 whereas that of Rubellite is 3.01-3.06.