Hackmanite and Milk Opal Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.27-2.33
  
1.98-2.50
  
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
  
Conchoidal
  
Cleavage
Not Available
  
Not Available
  
Mohs Hardness
5.5-6
  
5.5-6.5
  
Chemical Composition
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Not Available
  
Hackmanite and Milk Opal Chemical Formula
While comparing Hackmanite and Milk 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 Hackmanite and Milk Opal chemical formula.
- Chemical formula of Hackmanite- Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
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Hackmanite and Milk Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hackmanite and Milk Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hackmanite and Milk Opal Optical Properties during the identification of gemstone. Specific gravity of Hackmanite is 1.98-2.50 whereas that of Milk Opal is 1.98-2.50.