Hauyne and Black Opal Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Gelatinises in acids
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.4-2.5
  
1.97-2.22
  
Fracture
Uneven, Conchoidal, Brittle
  
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Distinct on {110}
  
Not Available
  
Mohs Hardness
5-6
  
6-6.5
  
Chemical Composition
(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2
  
SiO 2 + H 2OUlrich Henn and Claudio C.
  
Hauyne and Black Opal Chemical Formula
While comparing Hauyne and Black Opal 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 Hauyne and Black Opal chemical formula.
- Chemical formula of Hauyne- (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2
- Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Hauyne and Black Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hauyne and Black Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hauyne and Black Opal Optical Properties during the identification of gemstone. Specific gravity of Hauyne is 1.97-2.22 whereas that of Black Opal is 1.97-2.22.