Afghanite and Zinnwaldite Physical Properties
Tenacity
Not Available
  
Elastic
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.55-2.65
  
2.9-3.1
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle
  
Uneven
  
Cleavage
Perfect {10 1 0}
  
Perfect basal {001}
  
Mohs Hardness
5.5-6
  
3.5-4.0
  
Chemical Composition
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
  
Not Available
  
Afghanite and Zinnwaldite Chemical Formula
While comparing Afghanite and Zinnwaldite 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 Zinnwaldite 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)
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Afghanite and Zinnwaldite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Afghanite and Zinnwaldite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Zinnwaldite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 2.9-3.1 whereas that of Zinnwaldite is 2.9-3.1.