NGR Open Files

Archived information

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Open File 2179

Open File:  2179
Previous OF publication(s):  0507
Province / Territory:  Ontario
Funding Source:  Federal and Provincial (1977 & 1989)
Year of Collection:  1977

Survey Type:  Regional Lake Survey
# Lake sites:  922
# Stream sites:  
Survey Area:  18025 km²
NTS Sheet(s):  052A, 052H

The regional lake lake sediment and water survey for for the Thunder Bay area, northwestern Ontario (NTS 52A and the south half of 52H) was conducted during the summer of 1977.

This report presents analytical and statistical data for gold and 25 other elements obtained by re-analyzing lake sediments from 922 sites, collected at an average density of one sample per 19.6 km². Original analytical data selected from Open File 507 (published 1978) for 13 variables in lake sediments, and uranium, fluoride, and pH values in lake waters are also included in this report.

location map for Open File 2179
legend to accompany location map for Open File

Analytical Data

Sediments
variable method detection limit year of analysis
Antimony INAA 0.1 ppm 1989
Arsenic COL 1 ppm 1977
Arsenic INAA 0.5 ppm 1989
Barium INAA 50 ppm 1989
Bromine INAA 0.5 ppm 1989
Cerium INAA 5 ppm 1989
Cesium INAA 0.5 ppm 1989
Chromium INAA 20 ppm 1989
Cobalt AAS 2 ppm 1977
Cobalt INAA 5 ppm 1989
Copper AAS 2 ppm 1977
Europium INAA 1 ppm 1989
Gold INAA 2 ppb 1989
Hafnium INAA 1 ppm 1989
Iron AAS 0.02 pct 1977
Iron INAA 0.2 pct 1989
Lanthanum INAA 2 ppm 1989
Lead AAS 2 ppm 1977
Loss-on-ignition GRAV 1 pct 1977
Lutetium INAA 0.2 ppm 1989
Manganese AAS 5 ppm 1977
Mercury CV-AAS 10 ppb 1977
Molybdenum AAS 2 ppm 1977
Molybdenum INAA 1 ppm 1989
Nickel AAS 2 ppm 1977
Nickel INAA 10 ppm 1989
Rubidium INAA 5 ppm 1989
Samarium INAA 0.1 ppm 1989
Sample Weight 0.01 gms 1989
Scandium INAA 0.2 ppm 1989
Silver AAS 0.2 ppm 1977
Sodium INAA 0.02 pct 1989
Tantalum INAA 0.5 ppm 1989
Terbium INAA 0.5 ppm 1989
Thorium INAA 0.2 ppm 1989
Tungsten INAA 1 ppm 1989
Uranium NADNC 0.2 ppm 1977
Uranium INAA 0.2 ppm 1989
Ytterbium INAA 2 ppm 1989
Zinc AAS 2 ppm 1977
Waters
variable method detection limit year of analysis
Fluoride ISE 20 ppb 1977
Uranium FT 0.01 ppb 1977
pH GCM 1977

Acknowledgements:

The original reconnaissance survey was managed by the Geological Survey of Canada in conjunction with the Ontario Ministry of Natural Resources under the terms of the Canada - Ontario Agreement on a Uranium Reconnaissance Program. Funds for the determination of mercury were provided by Fisheries and Environment Canada. The reanalysis program was undertaken under the Canada - Ontario Mineral Development Agreement (1985-1990).

E.H.W. Hornbrook directed the original survey (1977) and the reanalysis program (1989).

P.W.B. Friske coordinated the operational activities of contract and Geological Survey of Canada staff (1989).

Collection:
Contractor and supervisor details for sample collection
Category Responsible Party
Contractor: Marshall Macklin Monaghan, Toronto, Ontario
Supervisor: E.H.W. Hornbrook, W.B. Coker (GSC)
Preparation:
Contractor and supervisor details for sample preparation
Category Responsible Party
Contractor: Golder Associates, Ottawa, Ontario (1977) Bondar-Clegg & Company,Ottawa, Ontario (1989)
Supervisor: J.J. Lynch, GSC (1977/1989)
Analysis:
Contractor and supervisor details for sample preparation
Category Responsible Party
Contractor: Chemex Laboratories, Vancouver, British Columbia (1977) Barringer Research, Toronto, Ontario (1977) Atomic Energy of Canada, Ottawa, Ontario (1977) Bondar-Clegg & Company,Ottawa, Ontario (1989)
Supervisor: J.J. Lynch, GSC (1977/1989)

Other information:
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