Opal and Norbergite Physical Properties
Tenacity
BrittleWalter Schumann
Not Available
Solubility
hot salt water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
3.177
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
None
{???} Distinct
Mohs Hardness
5-6.5
6-6.5
Chemical Composition
SiO2 · nH2O
Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
Opal and Norbergite Chemical Formula
While comparing Opal and Norbergite 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 Opal and Norbergite chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Norbergite- Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
Opal and Norbergite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Norbergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Norbergite Optical Properties during the identification of gemstone. Specific gravity of Opal is 3.177 whereas that of Norbergite is 3.177.