Hemimorphite and Dravite Physical Properties
Specific Gravity
3.30-3.50
3.03-3.18
Fracture
Uneven, ConchoidalWalter Schumann, Conchoidal
Uneven, Irregular, Conchoidal
Cleavage
Perfect on {110}, poor on {101}, {001} rare
{???} Indistinct
Chemical Composition
Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Hemimorphite and Dravite Chemical Formula
While comparing Hemimorphite and Dravite 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 Hemimorphite and Dravite chemical formula.
- Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Hemimorphite and Dravite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hemimorphite and Dravite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hemimorphite and Dravite Optical Properties during the identification of gemstone. Specific gravity of Hemimorphite is 3.03-3.18 whereas that of Dravite is 3.03-3.18.