Franklinite and Bertrandite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
5.05-5.22
  
2.59-2.60
  
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
  
Brittle, Metallic, Brittle, Metallic
  
Cleavage
None
  
{001} Perfect, {110} Distinct, {101} Distinct
  
Mohs Hardness
5.5-6
  
6-7
  
Chemical Composition
(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
  
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
  
Franklinite and Bertrandite Chemical Formula
While comparing Franklinite and Bertrandite 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 Franklinite and Bertrandite chemical formula.
- Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Franklinite and Bertrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Franklinite and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Franklinite and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Franklinite is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.