Minerals of Guyana - Magnesite

Uses and Facts

  • Similar to the production of lime, magnesite can be burned in the presence of charcoal to produce MgO, which in the form of a mineral is known as periclase. Large quantities of magnesite are burnt to make magnesium oxide: an important refractory material used as a lining in blast furnaces, kilns and incinerators.
  • Magnesite can also be used as a binder in flooring material. Furthermore it is being used as a catalyst and filler in the production of synthetic rubber and in the preparation of magnesium chemicals and fertilizers.
  • In fire assay, magnesite cupels can be used for cupellation as the magnesite cupel will resist the high temperatures involved.
  • At times magnesite is dyed to make beads used as ornaments.

Occurrences in Guyana

Map showing Magnesite occurrences