Hemimorphite and Opal Physical Properties
Tenacity
Brittle
BrittleWalter Schumann
Solubility
Soluble
hot salt water
Durability
Not Available
Not Available
Specific Gravity
3.30-3.50
1.98-2.25
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Cleavage
Perfect on {110}, poor on {101}, {001} rare
None
Chemical Composition
Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO2 · nH2O
Hemimorphite and Opal Chemical Formula
While comparing Hemimorphite and Opal 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 Opal 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 Opal- SiO2 · nH2O
Hemimorphite and Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hemimorphite and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hemimorphite and Opal Optical Properties during the identification of gemstone. Specific gravity of Hemimorphite is 1.98-2.25 whereas that of Opal is 1.98-2.25.