Breccias, such as Sudbury breccia and metabreccia, are preferred hosts to Cu-Ni-PGE mineralization in footwall country rocks and offset dykes of the Sudbury Igneous Complex. The ability to identify and distinguish unmineralized and mineralized metabreccia along offset dikes would help focus exploration efforts.


The main objective of this research project is to develop criteria for discriminating between unmineralized and mineralized metabreccia. By providing tools that aid in the recognition of mineralized metabreccia, exploration efforts and dollars can be focused on the most favourable host rocks.


Metabreccia is one of the main hosts of Cu-Ni-PGE mineralization along the Whistle offset dike. Petrographical, modal mineralogical, image analysis, mineral chemistry, and lithogeochemical observations do not suggest any significant differences between mineralized and unmineralized metabreccias.


Solution team

  • Damien Duff, CEMI
  • Peter Lightfoot, Vale
  • Lisa Gibson, Vale
  • Gregg Snyder, Sudbury Integrated Nickel Operations – A Glencore Company
  • Mike Sweeny, Sudbury Integrated Nickel Operations – A Glencore Company
  • Andy McDonald, MERC, Laurentian University
  • Lindsay Bygnes (MSc), Laurentian University
  • Claire McAneney, NSERC