Rosasite and Franklinite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Effervesces in cold
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
4-4.2
  
5.05-5.22
  
Fracture
Splintery
  
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
  
Cleavage
Perfect on {100} and {010}
  
None
  
Mohs Hardness
4
  
5.5-6
  
Chemical Composition
Not Available
  
(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
  
Rosasite and Franklinite Chemical Formula
While comparing Rosasite 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 Rosasite and Franklinite chemical formula.
>- Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Rosasite and Franklinite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Rosasite and Franklinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rosasite and Franklinite Optical Properties during the identification of gemstone. Specific gravity of Rosasite is 5.05-5.22 whereas that of Franklinite is 5.05-5.22.