Hemimorphite and Achroite Physical Properties
Specific Gravity
3.30-3.50
2.90-3.40
Fracture
Uneven, ConchoidalWalter Schumann, Conchoidal
Uneven, ConchoidalWalter Schumann
Cleavage
Perfect on {110}, poor on {101}, {001} rare
Indiscernible
Chemical Composition
Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Hemimorphite and Achroite Chemical Formula
While comparing Hemimorphite and Achroite 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 Achroite 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 Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Hemimorphite and Achroite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hemimorphite and Achroite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hemimorphite and Achroite Optical Properties during the identification of gemstone. Specific gravity of Hemimorphite is 2.90-3.40 whereas that of Achroite is 2.90-3.40.