Opal and Marialite Physical Properties
Tenacity
BrittleWalter Schumann
Brittle
Solubility
hot salt water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
2.50
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Cleavage
None
Distinct on {100} and {110}
Mohs Hardness
5-6.5
5.5-6
Chemical Composition
SiO2 · nH2O
3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
Opal and Marialite Chemical Formula
While comparing Opal and Marialite 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 Marialite chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Marialite- 3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
Opal and Marialite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Marialite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Marialite Optical Properties during the identification of gemstone. Specific gravity of Opal is 2.50 whereas that of Marialite is 2.50.