Arfvedsonite and Afghanite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.3-3.5
2.55-2.65
Fracture
Uneven, Brittle, Metallic, Brittle, Metallic
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle
Cleavage
Perfect on [110]
Perfect {10 1 0}
Chemical Composition
NaNa2(Fe++4Fe+++)Si8O22(OH)2
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Arfvedsonite and Afghanite Chemical Formula
While comparing Arfvedsonite and Afghanite 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 Arfvedsonite and Afghanite chemical formula.
- Chemical formula of Arfvedsonite- NaNa2(Fe++4Fe+++)Si8O22(OH)2
- Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Arfvedsonite and Afghanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Arfvedsonite and Afghanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Arfvedsonite and Afghanite Optical Properties during the identification of gemstone. Specific gravity of Arfvedsonite is 2.55-2.65 whereas that of Afghanite is 2.55-2.65.