Franklinite and Galena Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
5.05-5.22
6.23
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
Subconchoidal, Brittle, Metallic
Cleavage
None
Cubic perfect on [001], parting on [111]
Mohs Hardness
5.5-6
2.5-2.75
Chemical Composition
(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
PbS
Franklinite and Galena Chemical Formula
While comparing Franklinite and Galena 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 Galena chemical formula.
- Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Galena- PbS
Franklinite and Galena Specific Gravity
Another important criteria for qualitative analysis of gemstones is Franklinite and Galena Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Franklinite and Galena Optical Properties during the identification of gemstone. Specific gravity of Franklinite is 6.23 whereas that of Galena is 6.23.