Purpurite and Gahnite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.2-3.4
4.00-4.62
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
Conchoidal, Uneven
Cleavage
[100] [001] perfect
Indistinct parting on [111]
Mohs Hardness
4-4.5
7.5-8
Chemical Composition
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Purpurite and Gahnite Chemical Formula
While comparing Purpurite and Gahnite 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 Purpurite and Gahnite chemical formula.
- Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Purpurite and Gahnite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Purpurite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Purpurite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Purpurite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.