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TitleIron-formation hosted gold occurrences in the Ellice Hills area, Committee Bay belt, Nunavut
AuthorDeyell, C; Sherlock, R L
SourceGeological Survey of Canada, Current Research (Online) no. 2003-C16, 2003, 11 pages, (Open Access)
PublisherNatural Resources Canada
Mediaon-line; digital; CD-ROM
RelatedThis publication is contained in the following publications
File formatpdf
AreaEllice Hills; Committee Bay
Lat/Long WENS-90.0000 -88.0000 68.0000 67.0000
Subjectsregional geology; structural geology; economic geology; iron formations; gold; mineral occurrences; sedimentary rocks; arenites; volcanic rocks; intrusive rocks; igneous rocks; deformation; structural features; folds; Archean; Committee Bay belt; Prince Albert Group; Precambrian; Proterozoic
Illustrationssketch maps; photographs
Released2003 03 14
AbstractThe supracrustal rocks of the Committee Bay belt are dominated by clastic sedimentary rocks, ultramafic flows and intrusions, iron-formation, and quartz arenite, with lesser amounts of mafic to felsic volcanic rocks. In the Ellice Hills area, three iron-formation-hosted gold prospects are recognized: the Inuk, Mist-Koffy, and Peanut showings. In these occurrences, gold mineralization is localized in areas where
progressive D2 deformation has resulted in dilational settings, either at lithological contacts within high-strain zones or in the hinges of F2 folds. These dilational settings allowed for synkinematic alteration and gold introduction associated with sulphidation of iron-formation. These structural/stratigraphic settings are similar to those of gold deposits in the Hayes River area of the Committee Bay belt, and those of the Meadowbank deposits of the Woodburn Lake group. Initial interpretation of the deformation fabrics suggest that much of the iron-formation-hosted gold mineralization in the Committee Bay belt may be Paleoproterozoic in age.