| Title | Textural 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 |
| Download | Download (whole publication) |
| Author | Peter, J M; Bocking, N; Gadd, M G; Layton-Matthews, D; Johnson, N |
| Source | Targeted 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) |
| Year | 2018 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | on-line; digital |
| Related | This publication is contained in Rogers, N; (2018). Targeted
Geoscience Initiative: 2017 report of activities, volume 1, Geological Survey of Canada, Open File 8358 |
| File format | pdf |
| Province | British Columbia; Yukon |
| NTS | 94E; 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 |
| Area | Gataga District; Peel River |
| Lat/Long WENS | -141.0000 -120.0000 67.0000 57.0000 |
| Subjects | economic 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; ore systems approach; hyper-enriched black shale (HEBS) deposits; mineral liberation analysis (MLA); Phanerozoic; Paleozoic; Devonian; Silurian; Ordovician; Cambrian |
| Illustrations | geoscientific sketch maps; schematic cross-sections; photographs; photomicrographs |
| Program | Knowledge Management Coordination, Targeted Geoscience Initiative (TGI-5) |
| Program | Volcanic and sedimentary systems, Targeted Geoscience Initiative (TGI-5) |
| Released | 2018 01 19 |
| Abstract | Hyper-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. |
| GEOSCAN ID | 306476 |
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