Friedelite and Allanite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
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Durability
Not Available
  
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Specific Gravity
3.06-3.19
  
3.40-4.20
  
Fracture
UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven
  
Not Available
  
Cleavage
{010} Perfect
  
Not Available
  
Mohs Hardness
4-5
  
Not Available
  
Chemical Composition
Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
  
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Friedelite and Allanite Chemical Formula
While comparing Friedelite and Allanite 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 Friedelite and Allanite chemical formula.
- Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
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Friedelite and Allanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Friedelite and Allanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Friedelite and Allanite Optical Properties during the identification of gemstone. Specific gravity of Friedelite is 3.40-4.20 whereas that of Allanite is 3.40-4.20.