Mellite and Opal Physical Properties
Physical Properties
Tenacity
Not Available
BrittleWalter Schumann
Solubility
Not Available
hot salt water
Durability
Not Available
Not Available
Specific Gravity
1.58-1.60
1.98-2.25
Fracture
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Cleavage
{011} Imperfect
None
Mohs Hardness
2
5-6.5
Chemical Composition
Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.
SiO2 · nH2O
Mellite and Opal Chemical Formula
While comparing Mellite 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 Mellite and Opal chemical formula.
- Chemical formula of Mellite- Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.
- Chemical formula of Opal- SiO2 · nH2O
Mellite and Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Mellite and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mellite and Opal Optical Properties during the identification of gemstone. Specific gravity of Mellite is 1.98-2.25 whereas that of Opal is 1.98-2.25.
