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 2361

Open File:  2361
Previous OF publication(s):  0554
Province / Territory:  Ontario
Funding Source:  Federal and Provincial (1978 and 1990)
Year of Collection:  1978

Survey Type:  Regional Lake Survey
# Lake sites:  685
# Stream sites:  
Survey Area:  9590 km²
NTS Sheet(s):  041K, 041N

The regional lake sediment and water survey of the north shore of Lake Superior area, Ontario (NTS 41K and 41N) was conducted during the summer of 1978.

This report presents analytical and statistical data for gold and 25 other elements obtained by re-analyzing lake sediments from 685 sites, collected at an average density of one sample per 14.0 km². Original analytical data selected from Open File 554 (published 1979) for 12 variables in sediments, and uranium, fluoride, and pH values in lake waters are also included in this report.

location map for Open File 2361
legend to accompany location map for Open File

Analytical Data

variablemethoddetection limityear of analysis
AntimonyINAA0.1 ppm1990
ArsenicHY-AAS1 ppm1978
ArsenicINAA0.5 ppm1990
BariumINAA50 ppm1990
BromineINAA0.5 ppm1990
CeriumINAA5 ppm1990
CesiumINAA0.5 ppm1990
ChromiumINAA20 ppm1990
CobaltAAS2 ppm1978
CobaltINAA5 ppm1990
CopperAAS2 ppm1978
EuropiumINAA1 ppm1990
GoldINAA2 ppb1990
HafniumINAA1 ppm1990
IronAAS0.02 pct1978
IronINAA0.2 pct1990
LanthanumINAA2 ppm1990
LeadAAS2 ppm1978
Loss-on-ignitionGRAV1 pct1978
LutetiumINAA0.2 ppm1990
ManganeseAAS5 ppm1978
MolybdenumAAS2 ppm1978
MolybdenumINAA1 ppm1990
NickelAAS2 ppm1978
NickelINAA10 ppm1990
RubidiumINAA5 ppm1990
SamariumINAA0.1 ppm1990
Sample Weight0.01 gms1990
ScandiumINAA0.2 ppm1990
SilverAAS0.2 ppm1978
SodiumINAA0.02 pct1990
TantalumINAA0.5 ppm1990
TerbiumINAA0.5 ppm1990
ThoriumINAA0.2 ppm1990
TungstenINAA1 ppm1990
UraniumNADNC0.2 ppm1978
UraniumINAA0.2 ppm1990
YtterbiumINAA2 ppm1990
ZincAAS2 ppm1978
variablemethoddetection limityear of analysis
FluorideISE20 ppb1978
UraniumFT0.01 ppb1978
pHGCM 1978


The original reconnaissance survey was undertaken 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. The reanalysis program was undertaken under the Canada - Ontario Mineral Development Agreement (1985-1990).

E.H.W. Hornbrook directed the original survey (1978) and the reanalysis program (1990).

P.W.B. Friske coordinated the activities of contract and Geological Survey of Canada staff (1990).

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 (1978) Bondar-Clegg & Company, Ottawa, Ontario (1990)
Supervisor:J.J. Lynch, GSC (1978/1990)
Contractor and supervisor details for sample preparation
CategoryResponsible Party
Contractor:Chemex Labs, Vancouver, British Columbia (1978) Barringer Research, Toronto, Ontario (1978) Atomic Energy of Canada, Ottawa, Ontario (1978) Bondar-Clegg & Company, Ottawa, Ontario (1990)
Supervisor:J.J. Lynch, GSC (1978/1990)

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