Afghanite and Chromite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.65
4.5-4.8
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle
Uneven
Cleavage
Perfect {10 1 0}
None, parting may develop along {111}
Chemical Composition
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Fe++Cr2O4
Afghanite and Chromite Chemical Formula
While comparing Afghanite and Chromite 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 Afghanite and Chromite chemical formula.
- Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
- Chemical formula of Chromite- Fe++Cr2O4
Afghanite and Chromite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Afghanite and Chromite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Chromite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 4.5-4.8 whereas that of Chromite is 4.5-4.8.