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TitleAppendix 2: Morphological and compositional analysis of placer gold in the South Nahanni River drainage, Northwest Territories
DownloadDownload (whole publication)
AuthorRasmussen, K L; Mortensen, J K; Falck, H
SourceMineral and energy resource assessment of the Greater Nahanni Ecosystem under consideration for the expansion of the Nahanni National Park Reserve, Northwest Territories; by Wright, D F (ed.); Lemkow, D (ed.); Harris, J R (ed.); Geological Survey of Canada, Open File 5344, 2007 p. 367-380; 1 DVD, https://doi.org/10.4095/224565
Year2007
Documentopen file
Lang.English
MediaDVD
RelatedThis publication is contained in Wright, D F; Lemkow, D; Harris, J R; (2007). Mineral and energy resource assessment of the Greater Nahanni Ecosystem under consideration for the expansion of the Nahanni National Park Reserve, Northwest Territories, Geological Survey of Canada, Open File 5344
ProvinceNorthwest Territories
NTS95B/13; 95B/14; 95C/13; 95C/14; 95C/15; 95C/16; 95D/15; 95D/16; 95E; 95F; 95G/03; 95G/04; 95G/05; 95G/06; 95G/11; 95G/12; 95G/13; 95G/14; 95K/04; 95L/01; 95L/02; 95L/03; 95L/04; 95L/05; 95L/06; 95L/07; 95L/11; 95L/12; 95L/13; 95L/14; 105H/09; 105H/15; 105H/16; 105I
AreaNahanni National Park; Nahanni River; Mackenzie Mountains; Logan Mountains; Selwyn Mountains
Lat/Long WENS-129.5000 -123.0000 63.0000 60.7500
Subjectseconomic geology; mineral occurrences; mineralization; gold; placer deposits; bedrock geology; sedimentary rocks; igneous rocks; sedimentary ore deposits; sediment transport; fluvial transport; Greater Nahanni Ecosystem
Illustrationssketch maps; tables; plots
Viewing
Location
 
Natural Resources Canada Library - Ottawa (Earth Sciences)
 
Natural Resources Canada library - Calgary (Earth Sciences)
 
Geological Survey of Canada (Atlantic)
 
Natural Resources Canada library - Vancouver (Earth Sciences)
 
Natural Resources Canada library - Québec (Earth Sciences)
 
ProgramMineral and Energy Resource Assessment (MERA)
Released2007 11 19
AbstractPlacer gold has been reported in small amounts throughout the South Nahanni river drainage; however, the original source of the gold is uncertain. This study focuses on two types of placer gold in the area: (1) locally abundant grains derived from near Selena Creek, and (2) scattered grains recovered from streams throughout the South Nahanni drainage area. A shape analysis of all gold grains was completed and representative grains from each sample population were selected for imaging on the scanning electron microscope, along with analysis for Au-Ag-Cu-Hg values on the electron microprobe. The gold grains are typically >700 fineness and mercury is below detection
levels (<0.20%). Approximately half the grains analysed from the Selena Creek area registered near to, or slightly greater than, detection levels of copper (<0.04%), whereas the majority of grains from the isolated showings had copper contents below detection levels. The results are compared with published morphological and compositional data for placer and lode gold in other regions.
GEOSCAN ID224565