Dravite and Pyrite Physical Properties
Solubility
-
insoluble in water
Specific Gravity
3.03-3.18
5.00-5.20
Fracture
Uneven, Irregular, Conchoidal
Uneven, Conchoidal, ConchoidalWalter Schumann
Cleavage
{???} Indistinct
Indistinct on {001}; partings on {011} and {111}
Mohs Hardness
7-7.5
6-6.5
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Dravite and Pyrite Chemical Formula
While comparing Dravite and Pyrite 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 Dravite and Pyrite chemical formula.
- Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
- Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Dravite and Pyrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dravite and Pyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Pyrite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 5.00-5.20 whereas that of Pyrite is 5.00-5.20.