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TitleTextural and mineralogical characterization of a Ni-Zn-rich black shale occurrence at the Akie property, Kechika Trough, northern British Columbia, and comparison with examples from Yukon
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LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorPeter, J MORCID logo; Bocking, N; Gadd, M GORCID logo; Layton-Matthews, D; Johnson, N
SourceTargeted Geoscience Initiative: 2017 report of activities, volume 1; by Rogers, N (ed.); Geological Survey of Canada, Open File 8358, 2018 p. 207-216, https://doi.org/10.4095/306476 Open Access logo Open Access
Year2018
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
RelatedThis publication is contained in Targeted Geoscience Initiative: 2017 report of activities, volume 1
File formatpdf
ProvinceBritish Columbia; Yukon
NTS94E; 94F; 94G; 94I; 94J; 94K; 94L; 94M; 94N; 94O; 94P; 95; 96B; 96C; 96D; 96E; 96F; 96L; 104I; 104O; 104P; 105; 106A; 106B; 106C; 106D; 106E; 106F; 106G; 106H; 106I; 106J; 106K; 106L; 115I; 115N; 115O; 115P; 116A; 116B; 116C; 116F; 116G; 116H; 116I; 116J; 116K
AreaGataga District; Peel River
Lat/Long WENS-141.0000 -120.0000 67.0000 57.0000
Subjectseconomic geology; mineralogy; stratigraphy; geochemistry; mineral deposits; mineral exploration; mineral potential; metals; nickel; zinc; molybdenum; sulphides; sedimentary ore deposits; stratiform deposits; ore mineral genesis; mineralization; ore controls; sedimentary basins; geological history; tectonic history; bedrock geology; lithology; sedimentary rocks; shales; black shales; carbonates; limestones; siltstones; debris flow deposits; igneous rocks; volcanic rocks; clasts; structural features; faults; faults, thrust; folds; anticlines; synclines; lineaments; drillholes; textural analyses; thin section microscopy; scanning electron microscope analyses; bulk composition; Kechika Trough; Selwyn Basin; Akie Deposit; Richardson Trough; Mackenzie Platform; Nick Deposit; Peel River Deposit; Eagle Plains Deposit; Monster River Deposit; Cardiac Creek Deposit; Ancestral North America; Earn Group; Warneford Formation; Akie Formation; Gunsteel Formation; Road River Group; Kechika Group; Phanerozoic; Paleozoic; Devonian; Silurian; Ordovician; Cambrian
Illustrationsgeoscientific sketch maps; schematic cross-sections; photographs; photomicrographs
ProgramTargeted Geoscience Initiative (TGI-5) Knowledge Management Coordination
ProgramTargeted Geoscience Initiative (TGI-5) Volcanic and sedimentary systems
Released2018 01 19
AbstractHyper-enriched black shales (HEBS) that are enriched in Ni, Zn, Mo, and other elements occur within the Devonian strata of Yukon over 100s to 1000s km2. The mineralization is typically up to several tens of centimetres thick. Recently, during exploration for SEDEX deposits, mineralization that is potentially analogous (and time-stratigraphically equivalent) to HEBS mineralization in Yukon was discovered in the Kechika Trough of northeastern British Columbia. Here, about 3 to 20 m stratigraphically below the SEDEX mineralization of the Cardiac Creek deposit, an approximately 2 to 20 cm thick stratiform horizon hosts sphalerite, chalcopyrite, millerite, gersdorffite, clausthalite, pentlandite and pyrite within Devonian black, carbonaceous shale. This mineralization is strikingly similar in broad stratigraphic age, metal enrichments, textures and mineralogy to HEBS localities in Yukon. Based on these similarities, this mineralization likely was formed at a discrete time interval, over a wide area (likely 1000s km2) within the Selwyn Basin and the adjacent carbonate platform. This has implications for any genetic and exploration model(s) for this style of mineralization.
Summary(Plain Language Summary, not published)
The Targeted Geoscience Initiative (TGI) is directed towards providing next generation knowledge and methods to facilitate more effective targeting of buried mineral deposits. The program aims to enhance the effectiveness of exploration for Canada¿s major mineral systems by resolving foundational geoscience problems that constrain the geological processes responsible for the liberation metals from their source region, transportation of these ore metals and control their eventual deposition. TGI supports projects on gold, Ni-Cr-PGE, porphyry-style mineralization, uranium and volcanic- and sedimentary-hosted base metal mineralization ore systems, with each project divided into subprojects focused on resolving specific knowledge gaps by integrating data and studies from multiple sites across Canada. Herein, we present interim results and interpretations from a selection of the research activities currently being conducted under the auspices of TGI.
GEOSCAN ID306476

 
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