Hercynite and Dumortierite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.39
3.26-3.41
Fracture
ConchoidalGemdat.org, Uneven
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
Distinct on {100}, poor on {110}; parting on {001}
Mohs Hardness
7.5-8
7-8.5
Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
AlAl6O3BSi3O18
Hercynite and Dumortierite Chemical Formula
While comparing Hercynite and Dumortierite 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 Hercynite and Dumortierite chemical formula.
- Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
Hercynite and Dumortierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hercynite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.