| Title | Isotopic and geochemical signatures of base metal indicator minerals from regional surficial samples in the southern Mackenzie region, Northwest Territories |
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| Author | King, R; Piercey, S; Paulen, R ; Smith, R; Day, S; Petrus, J |
| Source | GAC-MAC-IAH 2019: where geosciences converge/AGC-AMC-AIH 2019 : où les géosciences convergent; GAC-MAC-IAH Joint Meeting, Abstract volume vol. 42, 2019 p. 121  Open Access |
| Links | Online - En ligne (complete volume, volume
complet, PDF, 6.08 MB)
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| Image |  |
| Year | 2019 |
| Alt Series | Natural Resources Canada, Contribution Series 20180387 |
| Publisher | Geological Association of Canada |
| Meeting | GAC-MAC-IAH 2019 / AGC-AMC-AIH 2019; Québec, QC; CA; May 12-15, 2019 |
| Document | serial |
| Lang. | English |
| Media | on-line; digital |
| Related | This publication is related to Isotopic and geochemical
signatures of base-metal indicator minerals in the southern Northwest Territories |
| File format | pdf |
| Province | Northwest Territories |
| NTS | 85B/09; 85B/10; 85B/11; 85B/14; 85B/15; 85B/16 |
| Area | Pine Point; Great Slave Lake |
| Lat/Long WENS | -115.0000 -114.0000 61.0000 60.5000 |
| Lat/Long WENS | -115.0000 -114.0000 61.0000 60.5000 |
| Subjects | surficial geology/geomorphology; geochemistry; mineralogy; economic geology; Science and Technology; Nature and Environment; mineral exploration; exploration methods; mineral deposits; base metals;
geochemical analyses; isotopic studies; glacial deposits; till samples; stream sediment samples; stream sediment geochemistry; till geochemistry; heavy mineral samples; mineral occurrences; mass spectrometer analysis; electron probe analyses;
mineralogical analyses; Pine Point Mining District |
| Program | GEM2: Geo-mapping for Energy and Minerals Mackenzie Corridor, Southern Mackenzie Surficial Mapping |
| Released | 2019 05 01 |
| Abstract | Heavy indicator minerals recovered from stream sediment and till samples are commonly used for exploration in glaciated terrain. The geochemical and isotopic composition of recovered heavy minerals can
be used to determine provenance, deposit type, and guide exploration programs to prospective areas. As part of the Geological Survey of Canada's Geo-mapping for Energy and Minerals (GEM) program till samples and stream sediments were collected across
an area of 35 000 km2 in the southern Northwest Territories. The Pine Point Mississippi Valley-type (MVT) district is present within the study area and is the largest known mineral occurrence in the region. Despite the potential to host additional
mineral resources, very little exploration has been undertaken outside of Pine Point. Till samples collected during previous studies in the region recovered elevated counts of base metal indicator minerals, including sphalerite, galena, chalcopyrite,
and arsenopyrite. Sulphur and lead isotope determinations by secondary ion mass spectrometry and laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) indicates galena grains were sourced from MVT occurrences distinct from Pine
Point and likely sourced from within 5 km of peak galena abundance samples sites. LA-ICP-MS and electron probe micro analysis of sphalerite grains suggest they originated from MVT mineralization, but distinct from Pine Point. Sulphur isotopes from
chalcopyrite grains show potential for manto and/or sediment-hosted Cu sources. Arsenopyrite grains are less abundant than other grains and were likely sourced from orogenic Au systems 380 km northeast of the study area in the Canadian Shield.
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| Summary | (Plain Language Summary, not published)
GEM2 Funded MSc student presentation at Canada's national geological conference, summarizing field research and laboratory results. |
| GEOSCAN ID | 313592 |
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