Franklinite and Spinel Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
none
Durability
Not Available
Not Available
Specific Gravity
5.05-5.22
3.64-3.66
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
None
None, but may exhibit slight parting
Chemical Composition
(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
MgAl2O4
Franklinite and Spinel Chemical Formula
While comparing Franklinite and Spinel 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 Spinel chemical formula.
- Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Spinel- MgAl2O4
Franklinite and Spinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Franklinite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Franklinite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Franklinite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.