Esperite and Hardystonite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.28-4.42
3.396-3.443
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Metallic
Brittle, Metallic
Cleavage
Distinct on [010] and [100] poor on [101]
[001] good, [100] and [110] fair
Chemical Composition
PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
Esperite and Hardystonite Chemical Formula
While comparing Esperite and Hardystonite 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 Hardystonite chemical formula.
- Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
Esperite and Hardystonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Esperite and Hardystonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Esperite and Hardystonite Optical Properties during the identification of gemstone. Specific gravity of Esperite is 3.396-3.443 whereas that of Hardystonite is 3.396-3.443.