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TitleMississippi Valley-type lead-zinc deposits
AuthorParadis, S; Hannigan, P; Dewing, K
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. 185-203
Year2007
Alt SeriesEarth Sciences Sector, Contribution Series 20070194
PublisherGeological Association of Canada, Mineral Deposits Division (St. John's, NL, Canada)
Documentserial
Lang.English
Mediapaper; DVD; digital
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
ProvinceBritish Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut
NTS1; 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
Lat/Long WENS-141.0000 -50.0000 90.0000 41.7500
Subjectseconomic geology; metallic minerals; mineral deposits; mineral occurrences; mineral exploration; exploration; mineral potential; mineralization; lead; zinc; Mississippi Valley deposits; sulphides; sulphide deposits; sedimentary rocks; carbonates; carbonate rocks; alteration
Illustrationssketch maps; photographs; graphs; cross-sections
ProgramConsolidating Canada's Geoscience Knowledge
ProgramTargeted Geoscience Initiative (TGI-3), 2005-2010
AbstractMississippi Valley-type (MVT) deposits are epigenetic, stratabound, carbonate-hosted sulphide bodies composed predominantly of sphalerite, galena, iron oxides (pyrite, marcasite), and carbonates (calcite, dolomite). MVT deposits are important Zn and Pb reserves and resources in the world. Silver, barite, gypsum, and fluorite may also be economically recovered from these deposits. Major world MVT deposits are found in Canada (Pine Point, Polaris, Nanisivik, Gays River, and Daniel's Harbour), mid-United States districts (Upper Mississippi Valley, Missouri, Tri-State, and Tennessee), Australia (Lennard Shelf and Coxco), and Europe (Silesia, Alpine, Reocin and Cévennes).

The mineralization occurs as open-space fillings of breccias and fractures, and/or as replacement of the host dolostone. Less commonly, sulphide and gangue minerals occupy primary carbonate porosity.

Most MVT deposits are found in carbonate platforms adjacent to cratonic sedimentary basins; they occur in limestone less frequently. They are also restricted to rocks younger than two billion years and formed during short time intervals, primarily within the Phanerozoic. MVT mineral districts are the product of regional- or subcontinental-scale fluid migration. Deposits are formed by the migration of warm saline aqueous solutions, similar to oilfield brines, through aquifers within platform-carbonate sequences toward the basin periphery. One of the most popular models relates orefluid migration to compressive tectonic regimes associated with continental accretion. This model is not universally applicable, however, as some of the MVT deposits most likely formed under an extensional tectonic regime.
GEOSCAN ID224180