Magnesium Oxide

Magnesium Oxide Typical 92% through to 85% MgO on a loss free basis

  • 200# & 325# plus other sizes


  • Also known as: Magnesium Oxide, Calcined Magnesium, Calmag, Causmag, Mag oxide



  • 200# OR 75 Micron Typical particle size
  • 325# OR 45 Micron Typical particle size
  • Products range between 92% through to 85% MgO Typical, on a loss free basis
  • Also other grades available




  • Store in a dry place. Sheltered from sunlight and humidity


Pack Size


  • 25kg bags palletized and shrink-wrapped
  • Bulk Bags 1000kg – 1200kg




  • High Quality Magnesium Oxide 92% MgO dusting grade Magnesium Oxide, drenching, as well as supplementary feed and stock feed applications.
  • Fine material ideal for coating of Fertiliser products due to the nature of the particle size distribution
  • Building and construction


See Reference: Dairy NZ Farmfact 3-1



  • Application rates as per Dairy NZ Farmfact 3-1
    25-40g per cow per day OR Dusting 50-70g per cow per day
    NB: Please reapply if reasonable rainfall has occurred after
    dusting and prior to grazing.




  • It is recommended that you seek Veterinarian advice and
    support to ascertain the correct use and application for your
    Magnesium products.
  • Due to ACVM recommendations we currently do not stock
    granular or chip material to avoid and reduce the potential
    of Salmonellas.

Whatever industry you’re in, please contact us today to discuss your industrial mineral needs