Opal and Povondraite Physical Properties
Tenacity
BrittleWalter Schumann
Not Available
Solubility
hot salt water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
3.26
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
Mohs Hardness
5-6.5
Not Available
Chemical Composition
SiO2 · nH2O
NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
Opal and Povondraite Chemical Formula
While comparing Opal and Povondraite 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 Povondraite chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Povondraite- NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
Opal and Povondraite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Povondraite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Povondraite Optical Properties during the identification of gemstone. Specific gravity of Opal is 3.26 whereas that of Povondraite is 3.26.