Lawsonite and Poldervaartite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.09
  
2.91
  
Fracture
White, Yellow, Pale blue, Brittle, Uneven
  
Handbook of mineralogy (2001)
  
Cleavage
Perfect on {100} and {010}, imperfect on {101}
  
None
  
Mohs Hardness
8
  
Not Available
  
Chemical Composition
Not Available
  
(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)
  
Lawsonite and Poldervaartite Chemical Formula
While comparing Lawsonite and Poldervaartite 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 Lawsonite and Poldervaartite chemical formula.
>- Chemical formula of Poldervaartite- (Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)
Lawsonite and Poldervaartite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Lawsonite and Poldervaartite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lawsonite and Poldervaartite Optical Properties during the identification of gemstone. Specific gravity of Lawsonite is 2.91 whereas that of Poldervaartite is 2.91.