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TitleMetallogeny of the Paleoproterozoic Flin Flon Belt, Manitoba and Saskatchewan
AuthorGalley, A; Syme, R; Bailes, A H
SourceMineral deposits of Canada: a synthesis of major deposit-types, district metallogeny, the evolution of geological provinces, and exploration methods; by Goodfellow, W D (ed.); Geological Association of Canada, Mineral Deposits Division, Special Publication no. 5, 2007 p. 509-531
Year2007
Alt SeriesEarth Sciences Sector, Contribution Series 20070204
PublisherGeological Association of Canada, Mineral Deposits Division (St. John's, NL, Canada)
Documentserial
Lang.English
Mediapaper; DVD
RelatedThis publication is contained in Goodfellow, W D; (2007). Mineral deposits of Canada: a synthesis of major deposit-types, district metallogeny, the evolution of geological provinces, and exploration methods, Geological Association of Canada, Mineral Deposits Division, Special Publication no. 5
File formatpdf
ProvinceManitoba; Saskatchewan
NTS63K/09; 63K/10; 63K/11; 63K/12; 63K/13; 63K/14; 63K/15; 63K/16; 63N/01; 63N/02; 63N/03; 63N/04; 63N/05; 63N/06; 63N/07; 63N/08
AreaFlin Flon; Snow Lake
Lat/Long WENS-102.0000 -100.0000 55.5000 54.5000
Subjectseconomic geology; tectonics; mineral exploration; mineral deposits; mineral occurrences; mineralization; base metals; base metal deposits; gold; nickel; copper; platinum; tectonic history; accretion; metallogeny; volcanogenic deposits; sulphides; alteration; hydrothermal alteration; metamorphism; deformation; Flin Flon Belt; Hanson Lake Block; Amisk Collage; Proterozoic; Precambrian
Illustrationssketch maps; tables; schematic diagrams; cross-sections; ternary diagrams; plots; photographs
ProgramConsolidating Canada's Geoscience Knowledge
ProgramTargeted Geoscience Initiative (TGI-3), 2005-2010
AbstractFor the past 75 years, the Paleoproterozoic Flin Flon Belt has been a significant contributor of base metals and Au to the Canadian economy. It is host to 27 significant volcanogenic massive sulphide deposits that originally contained over 154 Mt of ore, including the 62 Mt Flin Flon deposit. It is also host to several past-producing orogenic Au deposits, including the second >1 million ounce producer (New Britannia) within a Canadian Paleoproteroic terrane, the first being the Flin Flon VMS deposit. The Flin Flon Belt is part of the dominantly juvenile core of the Trans-Hudson Orogen, and consists of a series of 1.92 to 1.87 Ga accreted oceanic arcs and intervening back-arc basins, all intruded by successor arc plutons. The resulting collage has undergone several phases of deformation associated with subduction-related collision, oblique compression, and uplift during the closing of the original ocean basin. During the formation of its various domains and succeeding tectono-metamorphic history, the Flin Flon Belt was host to three main metallogenic events. The first is characterized by the formation of several types of VMS deposits within the various oceanic rifted arc terranes, with mafic-bimodal being the dominant VMS type. A period of successor arc and magmatism included development of mafi c gabbroic intrusions with Ni-Cu-PGE and PGE potential, plus subeconomic Cu-Mo porphyry-type mineralization. Crustal thickening during continued subduction-related collision was accompanied by formation of orogenic, shear-hosted Au mineralization.

The extension of the Flin Flon arc and ocean basin collage under the Phanerozoic cover rocks leaves much of this Paleoproteroic juvenile terrane open to further discovery of VMS and orogenic Au deposits. This will require a better understanding of the sub-Phanerozoic geology through high-resolution geophysics, a better understanding of deformation history and resulting structural architecture, geochemical and mineralogical zoning of large-scale VMS hydrothermal systems, and geochemical remote sensing.
GEOSCAN ID224193