Achroite and Bornite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.90-3.40
5.06-5.08
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven, Subconchoidal, Conchoidal, Brittle
Cleavage
Not Available
Poor on [111].
Mohs Hardness
7-7.5
3-3.25
Chemical Composition
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.
Cu5FeS4
Achroite and Bornite Chemical Formula
While comparing Achroite and Bornite 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 Achroite and Bornite chemical formula.
- Chemical formula of Achroite- 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.
- Chemical formula of Bornite- Cu5FeS4
Achroite and Bornite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Achroite and Bornite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Bornite Optical Properties during the identification of gemstone. Specific gravity of Achroite is 5.06-5.08 whereas that of Bornite is 5.06-5.08.