Opal and Scapolite Physical Properties
Tenacity
BrittleWalter Schumann
Not Available
Solubility
hot salt water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
2.58-2.74
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Splintery
Cleavage
None
{100} Distinct, {110} Distinct
Mohs Hardness
5-6.5
5.5-6
Chemical Composition
SiO2 · nH2O
Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references
Opal and Scapolite Chemical Formula
While comparing Opal and Scapolite 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 Scapolite chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Scapolite- Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references
Opal and Scapolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Scapolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Scapolite Optical Properties during the identification of gemstone. Specific gravity of Opal is 2.58-2.74 whereas that of Scapolite is 2.58-2.74.