NGR Open Files

Archived information

The database from which the NGR Open File metadata was extracted is unilingual and is not being actively maintained.  It contains information that is not readily available elsewhere.

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

variablemethoddetection limityear of analysis
AntimonyINAA0.1 ppm1989
ArsenicCOL1 ppm1977
ArsenicINAA0.5 ppm1989
BariumINAA50 ppm1989
BromineINAA0.5 ppm1989
CeriumINAA5 ppm1989
CesiumINAA0.5 ppm1989
ChromiumINAA20 ppm1989
CobaltAAS2 ppm1977
CobaltINAA5 ppm1989
CopperAAS2 ppm1977
EuropiumINAA1 ppm1989
GoldINAA2 ppb1989
HafniumINAA1 ppm1989
IronAAS0.02 pct1977
IronINAA0.2 pct1989
LanthanumINAA2 ppm1989
LeadAAS2 ppm1977
Loss-on-ignitionGRAV1 pct1977
LutetiumINAA0.2 ppm1989
ManganeseAAS5 ppm1977
MercuryCV-AAS10 ppb1977
MolybdenumAAS2 ppm1977
MolybdenumINAA1 ppm1989
NickelAAS2 ppm1977
NickelINAA10 ppm1989
RubidiumINAA5 ppm1989
SamariumINAA0.1 ppm1989
Sample Weight0.01 gms1989
ScandiumINAA0.2 ppm1989
SilverAAS0.2 ppm1977
SodiumINAA0.02 pct1989
TantalumINAA0.5 ppm1989
TerbiumINAA0.5 ppm1989
ThoriumINAA0.2 ppm1989
TungstenINAA1 ppm1989
UraniumNADNC0.2 ppm1977
UraniumINAA0.2 ppm1989
YtterbiumINAA2 ppm1989
ZincAAS2 ppm1977
variablemethoddetection limityear of analysis
FluorideISE20 ppb1977
UraniumFT0.01 ppb1977
pHGCM 1977


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).

Contractor and supervisor details for sample collection
CategoryResponsible Party
Contractor:Marshall Macklin Monaghan, Toronto, Ontario
Supervisor:E.H.W. Hornbrook, W.B. Coker (GSC)
Contractor and supervisor details for sample preparation
CategoryResponsible Party
Contractor:Golder Associates, Ottawa, Ontario (1977) Bondar-Clegg & Company,Ottawa, Ontario (1989)
Supervisor:J.J. Lynch, GSC (1977/1989)
Contractor and supervisor details for sample preparation
CategoryResponsible 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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