NTS 093J (McLeod Lake) INAA Geochemical Reanalysis

- W. Jackaman, Noble Exploration Services Ltd.

McLeod Lake INAA Reanalysis The McLeod Lake map area (just north of Prince George) has the potential to host many different types of economic mineral deposits. Geochemical sampling in the area was first carried out in 1986, and these samples were reanalyzed in 2006 using ICP-MS techniques. However, the samples were not included in recent INAA (instrumental neutron activation analysis) reanalysis programs, and remained the only area in BC surveyed prior to 1989 that did not include this important analytical information.

This project has now reanalyzed approximately 1150 stream sediment samples using INAA from the McLeod Lake map area. Results will be available in early 2013.

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 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 2013-06
McLeod Lake (NTS 093J) Sample Reanalysis (INAA)
By W. Jackaman

Geoscience BC Report 2013-06 presents INAA results for stream sediment samples collected during the original 1985 McLeod Lake RGS program. The McLeod Lake regional geochemical survey was conducted in 1985 (near Prince George) and included the collection of 1152 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 1273 drainage-sediment and quality-control samples were subsequently delivered to Becquerel Laboratories Inc. (Mississauga, ONT) and analyzed by INAA for 35 elements. 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.


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