Schorl and Rutile Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Insoluble in acids
Durability
Not Available
Not Available
Specific Gravity
3.18-3.22
4.20-4.30
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
{1011} Indistinct
{110} good, 100 moderate, parting on {092} and {011}
Mohs Hardness
Not Available
6-6.5
Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Schorl and Rutile Chemical Formula
While comparing Schorl and Rutile 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 Rutile 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 Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Schorl and Rutile Specific Gravity
Another important criteria for qualitative analysis of gemstones is Schorl and Rutile Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Rutile Optical Properties during the identification of gemstone. Specific gravity of Schorl is 4.20-4.30 whereas that of Rutile is 4.20-4.30.