Afghanite and Hardystonite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.65
3.396-3.443
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle
Brittle, Metallic
Cleavage
Perfect {10 1 0}
[001] good, [100] and [110] fair
Chemical Composition
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
Afghanite and Hardystonite Chemical Formula
While comparing Afghanite and Hardystonite 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 Hardystonite 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 Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
Afghanite and Hardystonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Afghanite and Hardystonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Hardystonite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 3.396-3.443 whereas that of Hardystonite is 3.396-3.443.