Franklinite and Purpurite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
5.05-5.22
3.2-3.4
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
Cleavage
None
[100] [001] perfect
Mohs Hardness
5.5-6
4-4.5
Chemical Composition
(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Franklinite and Purpurite Chemical Formula
While comparing Franklinite and Purpurite 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 Purpurite chemical formula.
- Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Franklinite and Purpurite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Franklinite and Purpurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Franklinite and Purpurite Optical Properties during the identification of gemstone. Specific gravity of Franklinite is 3.2-3.4 whereas that of Purpurite is 3.2-3.4.