Gaylussite and Pyromorphite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
decomposes in water
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
1.93-1.99
  
6.5-7.1
  
Fracture
Conchoidal, Conchoidal, Brittle
  
Uneven, ConchoidalArthur Thomas, Brittle, Metallic
  
Cleavage
perfect [110]
  
Imperfect- [10 1 1]
  
Mohs Hardness
2.5
  
3.5-4
  
Chemical Composition
Na2Ca(CO3)2•5(H2O)
  
Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
  
Gaylussite and Pyromorphite Chemical Formula
While comparing Gaylussite and Pyromorphite 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 Gaylussite and Pyromorphite chemical formula.
- Chemical formula of Gaylussite- Na2Ca(CO3)2•5(H2O)
- Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Gaylussite and Pyromorphite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gaylussite and Pyromorphite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gaylussite and Pyromorphite Optical Properties during the identification of gemstone. Specific gravity of Gaylussite is 6.5-7.1 whereas that of Pyromorphite is 6.5-7.1.