Esperite and Plumbogummite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
4.28-4.42
  
4.014
  
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Metallic
  
Uneven, Conchoidal
  
Cleavage
Distinct on [010] and [100] poor on [101]
  
None
  
Mohs Hardness
5-5.5
  
4-5
  
Chemical Composition
PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
  
Not Available
  
Esperite and Plumbogummite Chemical Formula
While comparing Esperite and Plumbogummite 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 Plumbogummite chemical formula.
- Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
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Esperite and Plumbogummite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Esperite and Plumbogummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Esperite and Plumbogummite Optical Properties during the identification of gemstone. Specific gravity of Esperite is 4.014 whereas that of Plumbogummite is 4.014.