| Title | Precambrian lode gold deposits - a summary of TGI-4 contributions to the understanding of lode gold deposits, with an emphasis on implications for exploration |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Dubé, B; Mercier-Langevin, P; Castonguay, S ; McNicoll, V J; Bleeker, W;
Lawley, C J M; De Souza, S; Jackson, S E; Dupuis, C; Gao, J -F; Bécu, V; Pilote, P; Goutier, J; Beakhouse, G P; Yergeau, D; Oswald, W; Janvier,
V; Fontaine, A; Pelletier, M; Beauchamp, A -M; Malo, M; Katz, L R; Kontak, D J; Tóth, Z; Lafrance, B; Gourcerol, B; Thurston, P C; Creaser, R A; Enkin, R J; El Goumi, N; Grunsky, E C; Schneider, D A; Kelly, C J; Lauzière, K |
| Source | Targeted Geoscience Initiative 4: Contributions to the understanding of Precambrian lode gold deposits and implications for exploration; by Dubé, B (ed.); Mercier-Langevin, P (ed.); Geological Survey of
Canada, Open File 7852, 2015 p. 1-24, https://doi.org/10.4095/296625  Open Access |
| Image |  |
| Year | 2015 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | on-line; digital |
| Related | This publication is contained in Targeted Geoscience
Initiative 4: Contributions to the understanding of Precambrian lode gold deposits and implications for exploration |
| File format | pdf |
| Province | Nunavut; British Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut;
Canada |
| NTS | 1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65;
66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560 |
| Area | Rankin Inlet; Timmins; Kirkland Lake; Timiskaming; Snow Lake; North Caribou Lake; Opapimiskan Lake; Schade Lake; Geraldton; Mosher Lake; Rouyn Noranda; Lac Chassignolle; Malartic; Côté Lake; Doyon;
Bousquet; LaRonde; Abitibi; Rainy River; James Bay |
| Lat/Long WENS | -180.0000 180.0000 90.0000 -90.0000 |
| Subjects | geochemistry; mineralogy; economic geology; structural geology; tectonics; geophysics; stratigraphy; geochronology; hydrothermal deposits; hydrothermal alteration; alteration; sulphides; sulphide
deposits; arsenopyrite; iron formations; gold; mineral deposits; mineral occurrences; Archean; mineralization; greenstone belts; structural analyses; structural features; faults; faults, extension; faults, thrust; magmatism; exploration; metallogeny;
ore mineral genesis; fault zones; volcanogenic deposits; boreholes; gravity surveys; gravity interpretations; iron; Algoma type iron formations; Algoma type deposits; geochemical analyses; geochemical interpretations; deformation; metamorphism; rare
earths; rare earths geochemistry; rock analyses, rare earth elements; depositional environment; depositional analyses; structural interpretations; tectonic evolution; metasedimentary rocks; igneous rocks; volcanic rocks; volcaniclastics; rhyolites;
dykes; folds; mineral potential; mineral deposits genesis; petrophysics; magnetic interpretations; electrical properties; mass spectrometer analysis; pyrite; silver; copper; zinc; lead; lithogeochemistry; bedrock geology; uranium lead dates; base
metals; base metal deposits; tonalites; tectonic interpretations; tectonic setting; turbidites; spectrometric analyses; whole rock geochemistry; analytical methods; exploration methods; Churchill Province; Meliadine gold district; Tiriganiaq Deposit;
Pyke Break; Timiskaming Basins; Archean Greenstone Belt; Lalor deposit; Musselwhite mine; North Caribou greenstone belt; Northern Iron Formation; Musselwhite deposit; Meadowbank deposit; Beardmore-Geraldton Belt; Wabigoon Subprovince; Abitibi
Greenstone Belt; Malartic Deposit; Upper Beaver gold system; Côté Lake gold system; Swayze greenstone belt; Côté Gold deposit; Doyon-Bousquet-LaRonde mining camp; Westwood Deposit; Bousquet Formation; Rainy River Gold deposit; Rainy River greenstone
belt; La Grande Subprovince; Roberto Gold Deposit; Eléonore Mine; Mustang Gold showing; Eastmain greenstone belt; North Caribou Greenstone Belt; Superior Province; Precambrian; Proterozoic |
| Illustrations | location maps; cross-sections; flow charts; plots; tables |
| Program | Targeted Geoscience Initiative (TGI-4) Gold Ore Systems |
| Released | 2015 06 11; 2023 03 17 |
| Abstract | The TGI-4 Lode Gold project, which comprises numerous site-specific and thematic research activities, covers the entire spectrum of crustal settings for lode gold deposits, from orogenic banded iron
formationhosted and greenstone-hosted quartz carbonate vein-type gold deposits formed deep in the crust (>5 km), to intrusion-related deposits that are formed at shallower crustal levels (~2-5 km), and to deposits formed at or near the seafloor.
Herein we synthesize a number of important project contributions that have significant implications for on-going mineral exploration for hidden deposits. Among the key findings is a newly established link between major faults, their early evolution,
syntectonic magmatism and synorogenic sedimentary basin evolution, and gold metallogenesis in various greenstone belts. The revised model incorporates a phase of tectonic extension-a distinct feature recognized in gold-rich settings worldwide-that is
applicable to mineral exploration targeting across the Canadian Shield. Importantly, the simultaneous multidisciplinary study of a number of large banded iron formation-hosted gold deposits and districts allows for the development of a unifying
genetic model for such deposits that integrates critical structural, stratigraphic, hydrothermal, and metamorphic elements. Several key features that are common to all of the studied deposits, but elements specific to dominantly banded iron
formation-hosted gold deposits or to deposits that are only partly hosted in banded iron formation, were also established. The Lode Gold project also bridges a major knowledge gap by characterizing a spectrum of "unusual" or "atypical" gold deposits
in the Superior Province. The new and revised models incorporate synvolcanic as well as pre-deformation and synorogenic synmagmatic or intrusion-related gold deposits that represent a large part of the newly discovered resources in the Canadian
Shield in both "brownfield" and "greenfield" exploration environments. |
| 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 volume summarizes 18 research activities completed under the TGI-4 lode gold ore systems project that focused on
lode gold deposits in ancient, deformed and metamorphosed terranes mainly located in the Superior and western Churchill geological Provinces. |
| GEOSCAN ID | 296625 |
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