Purpurite and Grandidierite Physical Properties

Purpurite and Grandidierite Chemical Formula

While comparing Purpurite and Grandidierite 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 Grandidierite chemical formula.

• Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
• Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Purpurite and Grandidierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Purpurite and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Purpurite and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Purpurite is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.