Shigaite and Franklinite Physical Properties
Tenacity
Moderately flexible
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.32
  
5.05-5.22
  
Fracture
Flexible Flexible fragments.
  
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
  
Cleavage
Perfect on {0001}
  
None
  
Mohs Hardness
2
  
5.5-6
  
Chemical Composition
Not Available
  
(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
  
Shigaite and Franklinite Chemical Formula
While comparing Shigaite and Franklinite 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 Shigaite and Franklinite chemical formula.
>- Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Shigaite and Franklinite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Shigaite and Franklinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Shigaite and Franklinite Optical Properties during the identification of gemstone. Specific gravity of Shigaite is 5.05-5.22 whereas that of Franklinite is 5.05-5.22.