Esperite and Opal Physical Properties
Tenacity
Not Available
BrittleWalter Schumann
Solubility
Not Available
hot salt water
Durability
Not Available
Not Available
Specific Gravity
4.28-4.42
1.98-2.25
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Metallic
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Cleavage
Distinct on [010] and [100] poor on [101]
None
Mohs Hardness
5-5.5
5-6.5
Chemical Composition
PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
SiO2 · nH2O
Esperite and Opal Chemical Formula
While comparing Esperite 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 Esperite and Opal chemical formula.
- Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Opal- SiO2 · nH2O
Esperite and Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Esperite and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Esperite and Opal Optical Properties during the identification of gemstone. Specific gravity of Esperite is 1.98-2.25 whereas that of Opal is 1.98-2.25.