Purpurite and Andalusite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.2-3.4
3.05-3.21
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
[100] [001] perfect
Good on {110}, poor on {100}
Chemical Composition
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Purpurite and Andalusite Chemical Formula
While comparing Purpurite and Andalusite 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 Andalusite chemical formula.
- Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Purpurite and Andalusite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Purpurite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Purpurite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Purpurite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.