Black Opal and Phosgenite Physical Properties
Tenacity
Not Available
Sectile
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
1.97-2.22
6.13
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).
Cleavage
Not Available
Distinct on {001} and {110}, indistinct on {100}
Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
Pb 2(CO 3)Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Black Opal and Phosgenite Chemical Formula
While comparing Black Opal and Phosgenite 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 Black Opal and Phosgenite chemical formula.
- Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
- Chemical formula of Phosgenite- Pb 2(CO 3)Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Black Opal and Phosgenite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Black Opal and Phosgenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Black Opal and Phosgenite Optical Properties during the identification of gemstone. Specific gravity of Black Opal is 6.13 whereas that of Phosgenite is 6.13.