Norbergite and Obsidian Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.177
  
2.35-2.60
  
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
  
Conchoidal, ConchoidalWalter Schumann, Conchoidal
  
Cleavage
{???} Distinct
  
Not Available
  
Mohs Hardness
6-6.5
  
5-5.5
  
Chemical Composition
Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
  
Not Available
  
Norbergite and Obsidian Chemical Formula
While comparing Norbergite and Obsidian 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 Norbergite and Obsidian chemical formula.
- Chemical formula of Norbergite- Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
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Norbergite and Obsidian Specific Gravity
Another important criteria for qualitative analysis of gemstones is Norbergite and Obsidian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Norbergite and Obsidian Optical Properties during the identification of gemstone. Specific gravity of Norbergite is 2.35-2.60 whereas that of Obsidian is 2.35-2.60.