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