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TitleStratigraphic setting of the Westwood-Warrenmac ore zones, Westwood Project, Doyon-Bousquet-LaRonde mining camp, Abitibi, Quebec
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AuthorMercier-Langevin, P; Wright-Holfeld, A; Dubé, B; Bernier, C; Houle, N; Savoie, A; Simard, P
SourceGeological Survey of Canada, Current Research (Online) no. 2009-3, 2009, 23 pages, https://doi.org/10.4095/247418 (Open Access)
Year2009
PublisherNatural Resources Canada
Documentserial
Lang.English
Mediaon-line; digital
File formatpdf (Adobe Acrobat Reader)
ProvinceQuebec
NTS32D/01NW; 32D/02NE; 32D/07SE; 32D/08SW
AreaLaRonde; Abitibi
Lat/Long WENS-78.7500 -78.2500 48.3333 48.1667
Subjectseconomic geology; metallic minerals; stratigraphy; mineral assemblages; mineral deposits; mineralization; mineral occurrences; base metals; gold; silver; copper; zinc; volcanogenic deposits; sulphides; sulphide deposits; igneous rocks; andesites; rhyolites; tholeiites; rhyodacites; Archean; Doyon-Bousquet-LaRonde Mining Camp; Westwood Project; Blake River Group; Bousquet Formation; Hébécourt Formation; Westwood- Warrenmac ore zones; Precambrian
Illustrationslocation maps; photographs; plots; stratigraphic columns; sections; profiles
ProgramAbitibi TGI-3, Targeted Geoscience Initiative (TGI-3), 2005-2010
Released2009 05 29
AbstractThe newly discovered mineralizations of the Westwood Project (14.2 Mt at 7.6 g/t Au, 3.5 Moz Au), found in the Doyon-Bousquet-LaRonde mining camp, represent one of the most signifi cant precious- and base-metal discoveries made in the last few years in Quebec.
The mineralizations occur in three east-trending corridors stacked, from north to south: Zone 2 Extension, North Corridor, and Westwood-Warrenmac Corridor. The ore zones of the Westwood-Warrenmac Corridor consist of stratiform auriferous semimassive to massive sulphide lenses containing variable but signifi cant amounts of Cu, Zn, and Ag.
The Westwood-Warrenmac ore zones lie in the same stratigraphic position as the Bousquet 2-Dumagami and LaRonde 20 North Au-rich lenses in the upper member of the Bousquet Formation, with felsic rocks of the base of the upper member in the footwall, and a distinctive calc-alkaline Fp- and Qz-phyric rhyolite (unit 5.3), a tholeiitic to transitional basaltic andesite (unit 5.4), and a transitional to calc-alkaline rhyodacite-rhyolite (unit 5.5) in the hanging wall. This implies that: 1) there is a signifi cant potential for Au-rich volcanogenic massive suphide (VMS) lenses at Westwood, as well as in the western part of the Doyon-Bousquet-LaRonde mining camp, 2) the western part of the Doyon-Bousquet-LaRonde camp is open to exploration for LaRonde Penna and Bousquet 2-Dumagami style mineralizations, and 3) transitional to calc-alkaline volcanic centres can be very prospective for precious-metal-enriched VMS-forming and intrusion-related systems.
GEOSCAN ID247418