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TitleGeological assessment of known Zn-Pb showings, Mackenzie Mountains, Northwest Territories
AuthorDewing, K; Sharp, R J; Ootes, L; Turner, E C; Gleeson, S
SourceGeological Survey of Canada, Current Research (Online) no. 2006-A4, 2006, 12 pages; 1 CD-ROM, (Open Access)
Alt SeriesNorthwest Territories Geoscience Office Contribution 0023
PublisherNatural Resources Canada
Mediaon-line; CD-ROM; digital
File formatpdf (Adobe Acrobat Reader)
ProvinceNorthwest Territories
NTS105O/01; 105O/07; 105O/08; 105O/09; 105O/10; 105O/14; 105O/15; 105O/16; 105P; 106A; 106B; 106C/09; 106C/10; 106C/15; 106C/16
AreaMackenzie Mountains; Keele River; Arctic Red River; Hess River; Ekwi River; Little Bear River; Grotto Creek; 7
Lat/Long WENS-132.6000 -128.0000 65.0000 63.0000
Subjects9; economic geology; structural geology; lead; zinc; mineral deposits; mineral potential; mineral exploration; mineral distribution; fracture filling deposits; brecciation; structural features; replacement deposits; sphalerite; galena; copper; sulphides; gangue minerals; dolomites; calcite; quartz; barite; fluorite; mineralization; limestones; carbonate; sedimentary rocks; paragenesis; host rocks; structural features; structural controls; lineaments; faults, thrust; faults, strike-slip; folds; synforms; antiforms; structural trends; source rocks; Plateau Thrust; Mackenzie Platform; Sekwi Formation; Whittaker Formation; Landry Formation; Headless Formation; Sunblood Formation; Arnica Formation; dissolution; belts; aquitards; Phanerozoic; Mesozoic; Cretaceous; Paleozoic; Permian; Carboniferous; Devonian; Silurian; Ordovician; Cambrian; Precambrian; Proterozoic
Illustrationssketch maps; stratigraphic charts; graphs; tables; photographs; cross-sections
ProgramNorthern Resources Development Program
Released2006 05 01
AbstractThe Mackenzie Mountains have more than 100 Zn-Pb showings. The objectives of the 2005 fieldwork were 1) to assess showings from a wide geographic area and stratigraphic range, 2) verify the assessment files, and 3) rank the showings on exploration potential.
TIC, ART-EKWI, BEAR, ICE, KEG, RAIN, TAP, AB, and GAYNA were visited. Most of the showings are hosted in fractures with minor brecciation and very rarely, carbonate replacement. The main economic minerals are sphalerite and galena, but copper sulphide minerals are commonly present. Gangue minerals include dolomite, calcite, quartz, barite, and fluorite. The best targets for further exploration are considered to be showings hosted in strata that were limestone (at the time of mineralization) rather than dolostone; that exhibit strong chemical interaction between the host rock and fluid resulting in carbonate dissolution or replacement; and that have multiple generations of sphalerite and galena. BEAR, GAYNA, AB, and TIC are considered the most attractive exploration targets.