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The Chief Peter property is one of several properties of Minfocus International Inc. in the Thunder Bay area of central North America. It is located ≈130 km west-northwest of the city of Thunder Bay in northwestern Ontario, Canada. The area was identified initially as being of interest due to its relationship to other platinum and palladium-rich mineral occurrences in the area of the Proterozoic Midcontinent Rift system, and its location adjacent to the major Archean Quetico break which trends east-northeasterly and is intimately involved in the geologic environment hosting the rich Current Lake platinum deposit further to the east.
Copper and nickel mineralisation were first discovered at Chief Peter Lake by James W. Lawrence in 1928, and since then numerous companies have increased the knowledge of the geologic environment and extent of mineralisation. The Shebandowan nickel mine, which was operated for many years by INCO, lies only 50 kilometres to the east-southeast. The ore from this mine was characterised by its high platinum group elements (“PGE”) levels relative to copper and nickel levels. Only the more recent exploration activities at Chief Peter Lake included analyses for PGE, which were determined to be present to significant levels and to typically display high platinum to palladium ratios, an encouraging indication of high per-tonne by-product values.