Afghanite and Hollandite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.65
5.05
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle
Brittle, Metallic
Cleavage
Perfect {10 1 0}
Distinct / Good, Prismatic
Chemical Composition
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Ba(Mn++++,Mn++)8O16
Afghanite and Hollandite Chemical Formula
While comparing Afghanite and Hollandite 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 Hollandite 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 Hollandite- Ba(Mn++++,Mn++)8O16
Afghanite and Hollandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Afghanite and Hollandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Hollandite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 5.05 whereas that of Hollandite is 5.05.