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Ministry of Energy Mines and Responsible for Core Review



NTS 104P - McDame


53/ GSC OF 562 / NGR 41 / GSC OF 733 / GBC 2011-2

The McDame (NTS 104P) reconnaissance-scale stream sediment and water survey was completed in 1978 and the resulting field and analytical data were released in 1979. A total 848 of sediment and water samples were collected from 802 sample sites.


As part of the RGS Archive Program, 847 archived sediment pulps were re-analyzed by epi-thermal INAA and this new data along with original survey results were re-published in 2000.


See also Open File 1997-15. Open File 1999-6.


Geoscience BC Report 2011-2 reports on the Northern BC Reanalysis Project -a continuation of a series of large-scale reanalysis initiatives that have been sponsored by Geoscience BC since 2007.  Recognized as a cost-effective means of updating information collected during older government funded regional geochemical surveys, these programs have significantly improved the BC geochemical database by providing a wide range of new analytical information at improved detection levels plus greater data compatibility with analytical methods currently being employed.  Digital data file includes new ICP-MS analytical results for a total of 7,651 stream and lake sediment samples. 

Original Analytical Data 
Sediments Waters
element method detection limit element method detection limit
Zinc AAS 2 ppm pH GCE 0.1
Copper AAS 2 ppm Uranium LIF 0.05 ppb
Lead AAS 2 ppm Fluoride ION 20 ppb
Nickel AAS 2 ppm
Cobalt AAS 2 ppm
Silver AAS 0.2 ppm
Manganese AAS 5 ppm
Tungsten COLOR 2 ppm
Iron AAS 0.02%
Molybdenum AAS 1 ppm
Uranium NADNC 0.5 ppm
INAA Data 
element detection limit element detection limit element detection limit
Gold 2 ppb Hafnium 1 ppm Sodium 0.10%
Antimony 0.1 ppm Iron 0.20% Tantalum 0.5 ppm
Arsenic 0.5 ppm Lanthanum 5 ppm Terbium 0.5 ppm
Barium 100 ppm Lutetium 0.2 ppm Thorium 0.5 ppm
Bromine 0.5 ppm Molybdenum 1 ppm Tungsten 2 ppm
Cerium 10 ppm Nickel 10 ppm Uranium 0.2 ppm
Cesium 0.5 ppm Rubidium 5 ppm Ytterbium 2 ppm
Chromium 5 ppm Samarium 0.5 ppm Zirconium 200 ppm
Cobalt 5 ppm Scandium 0.5 ppm    


Element Detection Limit Units
Aluminum Al 0.01 %
Antimony Sb 0.02 ppm
Arsenic As 0.1 ppm
Boron B 20 ppm
Barium Ba 0.5 ppm
Bismuth Bi 0.02 ppm
Cadmium Cd 0.01 ppm
Calcium Ca 0.01 %
Chromium Cr 0.5 ppm
Cobalt Co 0.1 ppm
Copper Cu 0.01 ppm
Gallium Ga 0.1 ppm
Gold Au 0.2 ppb
Iron Fe 0.01 %
Lanthanum La 0.5 ppm
Lead Pb 0.01 ppm
Magnesium Mg 0.01 %
Manganese Mn 1 ppm
Mercury Hg 5 ppb
Molybdenum Mo 0.01 ppm
Nickel Ni 0.1 ppm
Phosphorus P 0.001 %
Potassium K 0.01 %
Scandium Sc 0.1 ppm
Selenium Se 0.1 ppm
Silver Ag 2 ppb
Sodium Na 0.001 %
Strontium Sr 0.5 ppm
Sulphur S 0.01 %
Tellurium Te 0.02 ppm
Thallium Tl 0.02 ppm
Thorium Th 0.1 ppm
Titanium Ti 0.001 %
Tungsten W 0.1 ppm
Uranium U 0.1 ppm
Vanadium V 2 ppm
Zinc Zn 0.1 ppm
Beryllium Be 0.1 ppm
Cerium Ce 0.1 ppm
Cesium Cs 0.02 ppm
Germanium Ge 0.1 ppm
Hafnium Hf 0.02 ppm
Indium In 0.02 ppm
Lithium Li 0.1 ppm
Niobium Nb 0.02 ppm
Rubidium Rb 0.1 ppm
Rhenium Re 1 ppb
Tin Sn 0.1 ppm
Tantalum Ta 0.05 ppm
Yttrium Y 0.01 ppm
Zirconium Zr 0.1 ppm
Platinum Pl 2 ppb
Palladium Pd 10 ppb


The 1978 survey was undertaken by the Geological Survey of Canada (GSC) in conjunction with the B.C. Ministry of Energy, Mines and Petroleum Resources (MEMPR) under the terms of the Canada-British Columbia agreement on a Uranium Reconnaissance Program. 


E.H.W. Hornbrook directed GSC activities and  N.C. Carter directed MEMPR activities. Contracts were let to the following companies for sample collection, preparation and analysis and were managed by staff of the GSC and MEMPR.


COLLECTION: Bema Industries Ltd., Langley, B.C.
S.B. Ballantyne (GSC) and G. Nordin (MEMPR)
PREPARATION: Golder Associates, Ottawa, Ont.
J.J. Lynch (GSC)

Chemex Laboratories Ltd., North Vancouver, B.C. (Stream Sediments)
Atomic Energy of Canada Ltd., Ottawa, Ont. (U in Sediments)
Barringer Magenta Ltd., Toronto, Ontario (Stream Waters)
J.J. Lynch (GSC)

Initiated in 1990, the RGS Archive Program was conducted by the MEMPR and was funded in part by the Canada/British Columbia Mineral Development Agreement (1985-1990). P.F. Matysek and W. Jackaman directed the activities of MEMPR staff and managed the following sample preparation and analytical contracts.


PREPARATION:  Rob Phillips, Ottawa, Ont.
ANALYSIS: Becquerel Laboratories, Mississauga, Ont.