Friedelite and Black Opal Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.06-3.19
1.97-2.22
Fracture
UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
{010} Perfect
Not Available
Chemical Composition
Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
SiO 2 + H 2OUlrich Henn and Claudio C.
Friedelite and Black Opal Chemical Formula
While comparing Friedelite and Black 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 Friedelite and Black Opal chemical formula.
- Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
- Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Friedelite and Black Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Friedelite and Black Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Friedelite and Black Opal Optical Properties during the identification of gemstone. Specific gravity of Friedelite is 1.97-2.22 whereas that of Black Opal is 1.97-2.22.