Bastnasite and Nuummite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
4.95-5.0
  
3.18-3.37
  
Fracture
Uneven
  
Conchoidal
  
Cleavage
Imperfect to indistinct on {10 1 0}, parting on {0001}
  
Perfect on 210
  
Mohs Hardness
4-5
  
5.5-6
  
Chemical Composition
(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Not Available
  
Bastnasite and Nuummite Chemical Formula
While comparing Bastnasite and Nuummite 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 Bastnasite and Nuummite chemical formula.
- Chemical formula of Bastnasite- (Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
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Bastnasite and Nuummite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bastnasite and Nuummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bastnasite and Nuummite Optical Properties during the identification of gemstone. Specific gravity of Bastnasite is 3.18-3.37 whereas that of Nuummite is 3.18-3.37.