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Advances in the understanding of Canadian Ni-Cu-PGE and Cr ore systems - examples from the Midcontinent Rift, the Circum-Superior
Belt, the Archean Superior Province, and Cordilleran Alaskan-type intrusions: preface; Bleeker, W; in,
Targeted Geoscience
Initiative 5: Advances in the understanding of Canadian Ni-Cu-PGE and Cr ore systems - Examples from the Midcontinent Rift, the
Circum-Superior Belt, the Archean Superior Province, and Cordilleran Alaskan-type intrusions; Bleeker, W
(ed.); Houlé, M G (ed.).
Geological Survey of Canada, Open File 8722, 2020 p. 1-6,
https://doi.org/10.4095/326835 
Open Access