Black Opal and Cassiterite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
insoluble
Durability
Not Available
Not Available
Specific Gravity
1.97-2.22
6.86-7.03
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
Cleavage
Not Available
{100} imperfect, {110} indistinct; partings on {111} or {011}
Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Black Opal and Cassiterite Chemical Formula
While comparing Black Opal and Cassiterite 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 Cassiterite chemical formula.
- Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
- Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Black Opal and Cassiterite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Black Opal and Cassiterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Black Opal and Cassiterite Optical Properties during the identification of gemstone. Specific gravity of Black Opal is 6.86-7.03 whereas that of Cassiterite is 6.86-7.03.