Dolomite (CaMg(CO₃)₂)

Dual-mineral solution for paints, plastics, glass, and construction

01

Key industries

Paints and coatings

Paints & Coatings

Glass

Glass

Construction

Construction

Plastics

Plastics

Steel

Steel

02

Primary uses

  • Filler and extender in paints and plastics
  • Source of CaO and MgO in glass batches
  • Aggregate, soil conditioner, and construction filler

Glass

  • Introduces magnesia for durability and viscosity control
  • Supports chemical resistance in container and flat glass
  • Consistent Ca/Mg ratio for stable furnace chemistry
03

Characteristics

  • Dual calcium-magnesium carbonate
  • Slightly harder than calcite
  • Good brightness in processed grades

Glass

  • Predictable decomposition to CaO and MgO on firing
  • Low impurity levels in glass-grade material
04

Key properties

  • Specific gravity ~2.8 – 2.9
  • Harder than calcium carbonate
  • Thermally decomposes to CaO / MgO
  • Low solubility
  • Consistent calcium-to-magnesium ratio

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