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Ministry of Energy Mines and Responsible for Core Review

93A

 

NTS 93A - Quesnel Lake


BC RGS 5/50 /
GSC OF 776 / GBC 2007-6 / GBC 2007-10 / GBC 2008-3 / GBC 2009-14 / GBC 2013-17


 

The Quesnel Lake (NTS 93A) reconnaissance-scale stream sediment and water survey was completed in 1980 and the resulting field and analytical data were released in 1981. A total of 1286 sediment and 1281 water samples were collected from 1219 sample sites.

 

As part of the RGS Archive Program, 1241 archived sediment pulps were re-analyzed by epi-thermal INAA and this new data along with original survey results were published in 1999.

 

Geoscience BC Report 2007-6 reports new lake sediment and water data covering over 16,000 square kilometers of previously un-surveyed ground in central BC, and represents a significant addition to the provincial geochemical database.

 

Geoscience BC Report 2007-10 is aimed at enhancing the discovery of concealed mineral deposits using the halogen elements, focusing on soil and common vegetation from three target areas: Mount Polley (Imperial Metals Corp); QR (Cross Lake Minerals Ltd.); and 3Ts (Silver Quest Resources Ltd.).

 

Geoscience BC Report 2008-3 is a digital release that reports on geochemical results from a reanalysis of almost 5,000 archived stream and lake sediment samples collected in the region over 10 years ago.

 

Geoscience BC Report 2009-14 is an investigation using SiroSOM for the Analysis of QUEST Stream-Sediment and Lake-Sediment Geochemical Data on all NTS sheets for 93 and 94 A, B, C and D. 

 

Geoscience BC Report 2013-17 presents the results of a variety of sample media collected over known porphyry style Cu-Au mineralization in the Woodjam area. This report aims to establish a geochemical strategy to "see through" the extensive basalt cover, using a variety of analytical techniques on the different sample media. 

Original Analytical Data
Sediments Sediments
element method detection limit element method detection limit
Zinc AAS 2 ppm Tungsten COLOR 2 ppm
Copper AAS 2 ppm Mercury AAS-F 10 ppb
Lead AAS 2 ppm Antimony AAS 0.2 ppm
Nickel AAS 2 ppm Uranium NADNC 0.5 ppm
Cobalt AAS 2 ppm
Silver AAS 0.2 ppm Waters
Manganese AAS 5 ppm element method detection limit
Iron AAS 0.02% pH GCE 0.1
Molybdenum AAS 1 ppm Uranium LIF 0.05 ppb
Arsenic AAS-H 1 ppm Fluoride ION 20 ppb
INAA Data
Sediments
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    

Acknowledgements

The 1980 survey was managed and funded by the British Columbia Ministry of Energy, Mines and Petroleum Resources (MEMPR) as part of the Regional Geochemical Survey Program. Data management was provided by the Geological Survey of Canada (GSC).  

 

Contracts were let to the following companies for sample collection, preparation and analysis and were managed by staff of the MEMPR.

COLLECTION: Stokes Exploration Management Co. Ltd., Vancouver
J. Bristow, N.C. Carter, W.M. Johnson (MEMPR)
PREPARATION: Kamloops Research Assay and Laboratory Ltd.
W.M. Johnson (MEMPR)
ANALYSIS:

Chemex Laboratories Ltd., Vancouver, B.C. (Sediments and Waters)
Novartrack Analysts Ltd., Vancouver (U in Sediments)
Bondar-Clegg, Ltd., North Vancouver, B.C. (U in Waters)
W.M. Johnson (MEMPR)

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.