Wollastonite is a naturally occurring mineral which is a chemical combination of Calcium, Silicon and Oxygen. Wollastonite is formed when limestone or other high-calcium rocks undergo high temperature and pressure changes sometimes in the presence of silica-bearing fluids such as in skarns or contact metamorphic rocks.

This highly versatile mineral is characterized by its high whiteness, unique needle-like, or ‘acicular’, structure, high brightness, low moisture and oil absorption, and high heat stability.


Physical Properties:

  • High brightness
  • Low moisture and oil absorption
  • Low water solubility
  • High pH
  • Low volatile content
  • High melting point
  • Medium hardness (4.5 on Mohs’ scale)
  • Thermal stability
  • Plastics
  • Paints
  • Ceramics
  • Friction products
  • Construction materials
  • Adhesives and Sealants producers
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