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Ministry of Energy Mines and Responsible for Core Review

GeoFile 2006-9: Re-Analysis of Regional Geochemical Stream Sediment Samples from the McLeod Lake area (NTS Map Sheet 093J)

by Ray Lett and Britt Bluemel

 

View GeoFile 2006-9 Survey Summary (PDF, 3913 KB, 13 pages)
View GeoFile 2006-9 Appendix A - Listings (PDF, 504 KB, 138 pages)
View GeoFile 2006-9 Appendix B - Maps (PDF, 11.9 MB, 39 pages)
View GeoFile 2006-9 Appendix C - Open File BCRGS 15 (PDF, 211 KB, 30 pages)
Download GeoFile 2006-9 Data Files (XLS and DBF formats, 719 KB, 5 files)
View GeoFile 2006-9 Digital Readme File (PDF, 19 KB, 2 pages)
View 093J Analytical Data Summary
View 093J in MapPlace

 

Geofile 2006-9 reports new gold and trace metal data from the re-analysis of archived regional geochemical survey samples from the McLeod Lake (NTS 93J, RGS15) map sheet. This digital release consists of reports and appendices in PDF format, plus ZIP files with raw data files in XLS and DBF formats.

 

Past exploration in the McLeod Lake area has been hampered by a thick glacial sediment blanket. There are 25 reported mineral occurrences of which include 6 gold and 2 copper showings. Part of the map sheet is underlain by Triassic Takla Group rocks that can host significant porphyry gold-copper deposits, such as at Mount Milligan immediately west of the area. In 1985 a regional geochemical survey produced trace element data from the analysis of 1152 stream sediment and 940 water samples taken from 1088 sites over 14 500 km2. The sediment samples were originally analyzed for 19 trace elements including copper, lead, zinc, uranium, fluorine, barium, tin and tungsten. They were also analysed for loss on ignition (LOI). The samples were re-analyzed this year for 37 elements including gold by aqua regia digestion - inductively coupled plasma mass spectrometry (ICP/MS). Up to 147 ppb gold in sediment was detected from an area underlain by Takla rocks.

 

Geological Mapping References for this area:

Geology of the McLeod Lake map area (93J), British Columbia; Struik, L C. Geological Survey of Canada, Open File 2439, 1994; 18 pages

 

All publications of the BC Geological Survey are available digitally, free of charge, from this website.

 

For questions or more information on geology and minerals in British Columbia contact BCGS Mailbox or call toll free (BC Residents only).