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TitleTill indicator mineral and geochemical signatures of magmatic Ni-Cu deposits, Thompson Nickel Belt, central Canada
AuthorMcClenaghan, M B; Averill, S A; Kjarsgaard, I M; Layton-Matthews, D; Matile, G
SourceProceedings of the 24th International Applied Geochemistry symposium, Volume 1; by Lentz, D R (ed.); Thorne, K G (ed.); Beal, K-L (ed.); 2009 p. 75-78
LinksOnline [Proceedings of the 24th International Applied Geochemistry symposium, Volume 1 (PDF 2.2 Mb)]
Alt SeriesEarth Sciences Sector, Contribution Series 20080717
PublisherAssociation of Applied Geochemists
Meeting24th International Applied Geochemistry symposium; Fredericton; CA; June 1-4, 2009
File formatpdf
Subjectsgeochemistry; mineralogy; magmatic deposits; nickel; copper; platinum; till geochemistry; pentlandite; pyrrhotite; sperrylite; chalcopyrite; pyrite; millerite; arsenopyrite; intrusive rocks; ultramafic rocks; ice movement directions; sulphides; mineralization; mineral deposits; exploration methods; geochemical anomalies; Thompson Nickel Belt; Laurentide Ice Sheet; Superior Province; platinum group elements; indicator mineral geochemistry; indicator minerals; Quaternary; Precambrian
ProgramTargeted Geoscience Initiative (TGI-3), 2005-2010, Deep Search TGI-3
AbstractThe Geological Survey of Canada conducted a study around the ultramafic-associated Ni-Cu deposits in the northern Thompson Nickel Belt, Manitoba, Canada to document the indicator mineral and geochemical signatures of the deposits in till. Samples used in this study include archived till collected in 1996 and till and bedrock samples collected in 2005 and 2006. Ni-Cu mineralization indicator minerals identified in the study include pentlandite, pyrrhotite, sperrylite, chalcopyrite, pyrite, millerite and arsenopyrite. Indicators of potentially fertile ultramafic intrusions include chromite, Cr-diopside, forsterite, enstatite and Cr-corundum. Till geochemical pathfinder elements identified in this study include Ni, Cu, Pd, Pt, Co, As, Cd, Ag, Sb, Bi, Se, S, and Te. Six anomalous till samples from remote locations outside the Belt contain significant elevated concentrations of pathfinder elements and warrant further investigation. The Laurentide Ice Sheet flowed SW across the belt and subsequently W and exploration along the belt and in the surrounding terranes should consider both the older southwest and younger westward ice flow events when interpreting and following up till mineralogical and geochemical results.