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TitleNew insights on the structural and geological setting of the world-class Musselwhite gold deposit, Superior Province, northwestern Ontario
AuthorOswald, W; Dubé, B; Castonguay, S; McNicoll, V; Biczok, J; Mercier-Langevin, P; Malo, M; Skulski, T
SourceGeological Survey of Canada, Open File 7633, 2014, 1 sheet, (Open Access)
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
File formatpdf
NTS53B/09; 53B/10; 53B/15; 53B/16
AreaNorth Caribou Lake; Opapimiskan Lake; Schade Lake
Lat/Long WENS-92.0000 -79.5000 53.0000 48.0000
Subjectsmetallic minerals; structural geology; economic geology; Archean; gold; mineral deposits; iron formations; exploration; metallogeny; ore mineral genesis; fault zones; Algoma type iron formations; Algoma type deposits; mineralization; Musselwhite mine; North Caribou greenstone belt; Northern Iron Formation; Precambrian
Illustrationslocation maps; stratigraphic columns; photographs; cross-sections; stereonets; block diagrams
ProgramTargeted Geoscience Initiative (TGI-4), Gold Ore Systems
Released2014 07 24
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. The Musselwhite mine is a world-class gold deposit hosted by metamorphosed banded iron formation (BIF), comprised in the North Caribou greenstone belt (Superior Province) in northwestern Ontario. Targeted U-Pb geochronology indicates that the mine sequence is inverted, the deposit probably occurring along the overturned limb of an early, previously unrecognized, F1 map-scale fold. The layered and competent nature of BIF horizons embedded in less competent volcanic rocks strongly influenced the response to deformation, and hence played an important role in gold-bearing fluid flow, ore formation and distribution.