Obsidian and Rhodochrosite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.35-2.60
  
3.0-3.3
  
Fracture
Conchoidal, ConchoidalWalter Schumann, Conchoidal
  
Uneven, Conchoidal, Conchoidal to uneven, Brittle
  
Cleavage
Not Available
  
On {10 1 1} perfect; parting on {10 1 2}
  
Mohs Hardness
5-5.5
  
3.5-4
  
Chemical Composition
Not Available
  
MnCO3
  
Obsidian and Rhodochrosite Chemical Formula
While comparing Obsidian and Rhodochrosite 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 Obsidian and Rhodochrosite chemical formula.
>- Chemical formula of Rhodochrosite- MnCO3
Obsidian and Rhodochrosite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Obsidian and Rhodochrosite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Obsidian and Rhodochrosite Optical Properties during the identification of gemstone. Specific gravity of Obsidian is 3.0-3.3 whereas that of Rhodochrosite is 3.0-3.3.