| Title | Genesis of hyper-enriched black shale Ni-Mo-Zn-Pt-Pd-Re mineralization in the northern Canadian Cordillera |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Gadd, M G ; Peter,
J M; Layton-Matthews, D |
| Source | Targeted Geoscience Initiative 5: volcanic- and sediment-hosted massive-sulfide deposit genesis and exploration methods; by Peter, J M (ed.); Gadd, M G (ed.); Geological Survey of Canada, Bulletin 617, 2022 p. 15-38, https://doi.org/10.4095/328013  Open Access |
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| Year | 2022 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Media | on-line; digital |
| Related | This publication is contained in Targeted Geoscience
Initiative 5: volcanic- and sediment-hosted massive-sulfide deposit genesis and exploration methods |
| Related | NRCan photo(s) in this publication |
| File format | pdf |
| Province | Yukon; British Columbia |
| NTS | 94C; 94F; 106C; 106D; 106E; 106F; 106K; 106L; 106M; 106N; 116 |
| Area | Yukon River; Ogilvie River; Porcupine River; Ogilvie Mountains |
| Lat/Long WENS | -141.0000 -132.0000 67.0000 64.0000 |
| Lat/Long WENS | -126.0000 -124.0000 58.0000 56.0000 |
| Subjects | economic geology; geochemistry; sedimentology; geochronology; paleontology; stratigraphy; mineralogy; Science and Technology; Nature and Environment; Middle Devonian; mineral exploration; exploration
guidelines; mineral deposits; sedimentary ore deposits; polymetallic ores; sulphide deposits; metals; nickel; molybdenum; zinc; platinum; palladium; gold; lead; zinc; silver; ore mineral genesis; mineralization; ore controls; syngenesis; diagenesis;
sedimentation; eustatic submergence; continental margins; sedimentary basins; paleoenvironment; depositional environment; marine environments; sea water geochemistry; mass spectrometer analysis; geochemical analyses; host rocks; bedrock geology;
lithology; sedimentary rocks; shales; ore grades; sulphides; pyrite; radiometric dating; biostratigraphy; micropaleontology; microfossils; conodonts; isotopic studies; sulphur; osmium; lithostratigraphy; lithogeochemistry; mineralogical analyses;
Canadian Cordillera; Richardson Trough; Kechika Trough; Blackstone Trough; Monster River Showing; Nick Deposit; Peel River Deposit; Moss Deposit; Akie Property; Canol Formation; Road River Group; Yukon Block; platinum group elements; Phanerozoic;
Paleozoic; Devonian |
| Illustrations | geoscientific sketch maps; tables; lithologic sections; photographs; profiles; photomicrographs; plots; schematic representations |
| Program | Targeted Geoscience Initiative (TGI-5) Volcanic and sedimentary systems - volcanogenic massive sulphide ore systems |
| Released | 2022 01 27; 2022 11 17 |
| Abstract | Polymetallic (Ni-Mo-Zn-Pt-Pd-Au-Re) hyper-enriched black shales in the northern Canadian Cordillera consist of thin, semi-massive sulfides interbedded with black shale. We studied HEBS deposits at Nick,
Peel River, Monster River, and Moss in northern Yukon, and at a single locality underlying the Cardiac Creek Pb-Zn-Ag deposit in northeastern British Columbia. High-grade mineralization contains up to 7.4 weight per cent Ni, 2.7 weight per cent Zn,
0.38 weight per cent Mo, 400 ppb Pt, 250 ppb Pd, 160 ppb Au, and 58.5 ppm Re. Sulfide mineralization formed during syngenesis to later diagenesis. Analyses by LA-ICP-MS indicate that pyrite is the principal host of platinum-group elements, Au, and
Re. Mineralization and sedimentation were coeval based on the overlap between Re-Os geochronology of HEBS at Nick and Peel River (390.7 ± 5.1 and 387.3 ± 4.4 Ma, respectively) and conodont biostratigraphic ages of sedimentary host rocks. Bulk S
isotope composition of HEBS is uniformly negative, indicating that bacterial reduction of seawater sulfate generated sulfur to precipitate sulfide minerals. The initial Os ratios at Peel River (0.25 ± 0.07) and Nick (0.32 ± 0.20) overlap with Middle
Devonian seawater, suggesting that elemental enrichment was derived from seawater. |
| Summary | (Plain Language Summary, not published)
The Targeted Geoscience Initiative (TGI) is a collaborative federal geoscience program that provides industry with the next generation of geoscience
knowledge and innovative techniques to better detect buried mineral deposits, thereby reducing some of the risks of exploration. This contribution summarizes the results of a 5-year study of multiple mineral deposit types: polymetallic hyper-enriched
black shale; sedimentary exhalative Pb-Zn; carbonate-hosted Pb-Zn, magnesite; fracture-controlled replacement Zn-Pb, rare-earth element-F-Ba; and volcanogenic massive sulfides. Studies employed field geology, combined with geochemical
(lithogeochemistry, stable and radiogenic isotopes, fluid inclusions, and mineral chemistry) and geophysical (rock properties, magnetotelluric, and seismic) methods. Collectively, the research provides advanced genetic and exploration models for
volcanic- and sedimentary-hosted base-metal deposits, together with new laboratory, geophysical, and field techniques. |
| GEOSCAN ID | 328013 |
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