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TitleTill geochemical signatures of the Broken Hammer Cu-(Ni)-PGE occurrence, North range, Sudbury Structure, Ontario
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorMcClenaghan, M BORCID logo; Ames, D EORCID logo; Buckle, J L; Bajc, A F
SourceGeological Survey of Canada, Open File 7602, 2014, 65 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is related to the following publications
File formatreadme
File formatpdf; rtf; xls
NTS41I/06; 41I/07; 41I/10; 41I/11
Lat/Long WENS -81.5000 -80.5000 46.8333 46.4167
Subjectsgeochemistry; economic geology; surficial geology/geomorphology; geochemical analyses; geochemical surveys; tills; till geochemistry; till analyses; mineralization; nickel; copper; platinum; base metals; base metal deposits; indicator elements; drift deposits; drift prospecting; vein deposits; Sudbury Igneous Complex; Broken Hammer Cu-(Ni)-PGE Occurrence; North Range; platinum group elements; Cenozoic; Quaternary
Illustrationslocation maps; photographs; tables; pie charts; plots; ternary diagrams
ProgramTargeted Geoscience Initiative (TGI-4) Mafic-Ultramafic Ore Systems
ProgramTargeted Geoscience Initiative (TGI-3), 2005-2010 Deep Search TGI-3
Released2014 10 14
AbstractThe Geological Survey of Canada conducted detailed till sampling around the Broken Hammer Cu-(Ni)- PGE occurrence in the North Range of the Sudbury Structure, northeastern Ontario, to document the indicator mineral and multi-element geochemical signature in the till. The Broken Hammer occurrence consists of a shallow surface zone of vein and vein stockwork-hosted Cu-PGE mineralization within Sudbury breccia developed in the NeoArchean quartz-monzonite Levack Gneiss Complex. It consists of a main 2 to 120 cm wide chalcopyrite vein dominated by chalcopyrite-magnetite-millerite with numerous trace and rare precious metal minerals, including tellurides, bismuthides, selenides, and stannides. The Laurentide Ice Sheet flowed southward across the Broken Hammer region depositing a sandy till. The main indicator minerals in till overlying and just down-ice of the occurrence include sperrylite, chalcopyrite, and gold. The <0.063 mm size fraction of till overlying and just down-ice of the occurrence displays a strong geochemical signature of the mineralization, most notably for Pd, Pt, Au, and Cu, as well as Ni, Ag, Cd, Sb, Bi, Se, Te, Tl, and Sn.
Summary(Plain Language Summary, not published)
The Targeted Geoscience Initiative (TGI-4) is a collaborative federal geoscience program that provides industry with the next generation of geoscience knowledge and innovative techniques to better detect buried mineral deposits, thereby reducing some of the risks of exploration. This open file reports till geochemical data for a detailed glacial dispersal study around the Broken Hammer Cu-PGE footwall occurence on the North Range of the Sudbury structure.

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