Schorl and Dumortierite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.18-3.22
3.26-3.41
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
{1011} Indistinct
Distinct on {100}, poor on {110}; parting on {001}
Mohs Hardness
Not Available
7-8.5
Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
AlAl6O3BSi3O18
Schorl and Dumortierite Chemical Formula
While comparing Schorl 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 Schorl and Dumortierite chemical formula.
- Chemical formula of Schorl- Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
Schorl and Dumortierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Schorl and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Schorl is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.