NGR stream, Indicator minerals
NGR stream sediment and water survey, parts of NTS 106M, 107B, 116P, 117A, Richardson Mountains, Northwest Territories, 2003.
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In July 2003, a helicopter-supported stream sediment and water survey was carried out in the Richardson Mountains area, Northwest Territories. A total of 280 sites were sampled for stream sediments and waters. A total of 127 sites were sampled for heavy mineral concentrates. Stream sediments and water were collected at 280 sites; heavy minerals were collected at 127 sites. The data are published in Geological Survey of Canada Open File 4670.
This survey was carried out using National Geochemical Reconnaissance (NGR) protocols.
NGR stream sediment, water and HMC
At each site a pre-labelled Kraft paper bag was two-thirds filled with silt or fine sand collected from the active stream channel. In practice, the silt sample was collected after water samples were collected but before a bulk sediment sample. Handfuls of silt from various points in the active stream channel were collected while gradually moving upstream. A moss mat sample was sometimes collected when a suitable sample was scarce or absent.
At every site, waters were sampled mid-channel, from flowing water where possible. At sites where sediments were taken for heavy mineral concentration (approximately every second site) two water samples were generally collected. Samples were collected in 125 mL Nalgene bottles. The bottles were rinsed two or three times before collecting the sample.
Material for heavy mineral concentrates was collected from the upstream points of mid-channel bars, at a single point where possible. Material was wet-sieved through a 12-mesh stainless steel sieve into a 5-gallon plastic pail lined with a heavy-duty plastic bag until a sample weight of 10-15 kg was attained.
|1||Day, S.J.A., Lariviere, J.M., Friske, P.W.B., McNeil, R.J., Cairns, S.R., McCurdy, M.W., Gal, L.P. (2005). Geochemical Reconnaissance (NGR): regional stream sediment and water geochemical data, Richardson Mountains, Northwest Territories (parts of NTS 106 M, 107 B, 116 P and 117 A) including analytical, mineralogical and kimberlite indicator mineral data from silts, heavy mineral concentrates and waters. Geological Survey of Canada, Open File 4670, 1 CD-ROM. (more)|
|1||2003-2007||NGR/NTGO stream sediment and water surveys, Northwest Territories, 2003-2005 (more)|
|Minimum Latitude||Maximum Latitude||Minimum Longitude||Maximum Longitude|
The geographic extent of the survey is defined by the following polygons:
Covers parts of NTS 106M (Fort McPherson), 107B (Aklavik), 116P (Bell River) and 117A (Blow River) in the Richardson Mountains area, Northwest Territories. It is bordered to the west by the Yukon-Northwest Territories border and to the east by the Mackenzie Delta.
Covers part of NTS 106M (Fort McPherson) in the Richardson Mountains, Northwest Territories. It is located north of the Dempster Highway, approximately 25 km southwest of the town of Fort McPherson.
Covers part of NTS 106M (Fort McPherson) and 116P (Bell River) in the Richardson Mountains, Northwest Territories. It is bordered to the west by the Yukon-Northwest Territories border and is located approximately 50 km southwest of the town of Fort McPherson.
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