Nelson - Lardeau Regional Geochemical Survey Reanalysis Project, Kootenays, British Columbia
(NTS 082F, 082K)
- Wayne Jackaman, Noble Exploration Services Ltd.

This region is one of the few original survey areas that has not has existing sample pulps reanalyzed. Utilizing protocols developed by previous Geoscience BC reanalysis initiatives, archived sediment samples will be recovered from storage in Ottawa. Although processed pulps have been lost for parts of the study area, a portion of the oversized material is currently stored in 500 ml plastic containers that may contain sufficient -80 mesh material for analysis by ICP-MS.

Posters and Presentations
2013: Updating the British Columbia Regional Geochemical database with new field survey and sample reanalysis data to support mineral exploration
- Mineral Exploration Roundup Conference 2013 Poster (pdf, 40 MB)
Technical Articles
2013: "Updating the British Columbia Regional Geochemical Survey database with new field survey and sample reanalysis data to support mineral exploration"
- Summary of Activities 2012, Report 2013-1 p. 5-10 (pdf, 3.4 MB)
Final Deliverables
Geoscience BC Report 2013-04
Lardeau (NTS 082K) Sample Reanalysis (ICP-MS)

Geoscience BC Report 2013-04 presents ICP-MS results for stream sediment samples collected during the original 1977 Lardeau RGS program. The Lardeau regional geochemical survey was conducted in 1977 and included the collection of 1297 stream sediment samples. In co-operation with the BC Geological Survey and Natural Resources Canada, samples saved from the survey work were retrieved from storage facilities in Ottawa. A total of 1435 drainage-sediment and quality-control samples were subsequently delivered to Acme Analytical Laboratories Ltd. (Vancouver, BC) and analyzed by an ultra-trace aqua-regia digestion (0.5 g) ICP-MS technique for 53 elements. Due to a deficiency of available material, one sample was not included in the reanalysis work.

ICP-MS results have been provided in the Microsoft® Excel (XLS) file GBC REPORT 2013-04.XLS. The data have been carefully checked for analytical quality using blind duplicate samples and control reference material. When determined to be complete and accurate, the reanalysis data were merged with sample site location information acquired from the original survey publication.

Geoscience BC Report 2013-09
Nelson (NTS 082F) Sample Reanalysis (ICP-MS)

Geoscience BC Report 2013-09 presents ICP-MS results for stream sediment samples collected during the original 1977 Nelson RGS program. Results from the 1977 Lardeau RGS program were released in January 2013 as Geoscience BC Report 2013-04 (see above). The Nelson regional geochemical survey was conducted in 1977 and included the collection of 1394 stream sediment samples. In co-operation with the BC Geological Survey (BCGS) and Natural Resources Canada (NRCan), samples saved from the survey work were retrieved from storage facilities in Ottawa. A total of 1554 drainage-sediment and quality-control samples were subsequently delivered to Acme Analytical Laboratories Ltd. (Vancouver, BC) and analyzed by an ultra-trace aqua-regia digestion (0.5 g) ICP-MS technique for 53 elements.

ICP-MS results have been provided in the Microsoft® Excel (XLS) file GBC REPORT 2013-09.XLS. The data have been carefully checked for analytical quality using blind duplicate samples and control reference material. Reanalysis data determined to be complete and accurate were merged with sample site location information acquired from the original survey publication (Lett, 2005). Routine comparison of the original determinations with the ICP-MS analyses for elements such as copper, lead, nickel and zinc, identified inconsistencies in some samples. As a result, ICP-MS data for 382 samples have been removed from the data set until further investigations can be completed.


 


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