Chromite and Achroite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.5-4.8
2.90-3.40
Fracture
Uneven
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
None, parting may develop along {111}
Not Available
Chemical Composition
Fe++Cr2O4
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.
Chromite and Achroite Chemical Formula
While comparing Chromite and Achroite 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 Chromite and Achroite chemical formula.
- Chemical formula of Chromite- Fe++Cr2O4
- 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.
Chromite and Achroite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chromite and Achroite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chromite and Achroite Optical Properties during the identification of gemstone. Specific gravity of Chromite is 2.90-3.40 whereas that of Achroite is 2.90-3.40.