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 2026

Open File:  2026
Previous OF publication(s):  
Province / Territory:  Ontario
Funding Source:  Federal and Provincial
Year of Collection:  1987

Survey Type:  Regional Lake Survey
# Lake sites:  367
# Stream sites:  0
Survey Area:  3288 km²
NTS Sheet(s):  042D, 042E, 052A, 052B, 052H

The regional lake sediment and water survey of four areas in northern Ontario (NTS 42D, 42E, 52A, 52B, 52H) was conducted during the summer of 1987.

This report presents analytical and statistical data for 47 variables in lake sediments from 367 sample sites, collected at an average density of one sample per 9.0 km². This report includes values for uranium, fluoride, pH and alkalinity in waters.

location map for Open File 2026
legend to accompany location map for Open File

Analytical Data

variablemethoddetection limityear of analysis
AntimonyHY-AAS0.2 ppm1987
AntimonyINAA0.1 ppm1987
ArsenicHY-AAS1 ppm1987
ArsenicINAA0.5 ppm1987
BariumINAA50 ppm1987
BromineINAA0.5 ppm1987
CadmiumAAS0.2 ppm1987
CeriumINAA5 ppm1987
CesiumINAA0.5 ppm1987
ChromiumAAS1 ppm1987
ChromiumINAA20 ppm1987
CobaltAAS2 ppm1987
CobaltINAA5 ppm1987
CopperAAS2 ppm1987
EuropiumINAA1 ppm1987
FluorineAAS20 ppm1987
GoldINAA2 ppb1987
HafniumINAA1 ppm1987
IronAAS0.02 pct1987
IronINAA0.2 pct1987
LanthanumINAA2 ppm1987
LeadAAS2 ppm1987
Loss-on-ignitionGRAV1 pct1987
LutetiumINAA0.2 ppm1987
MagnesiumAAS1 ppm1987
ManganeseAAS5 ppm1987
MercuryCV-AAS10 ppb1987
MolybdenumAAS2 ppm1987
MolybdenumINAA1 ppm1987
NickelAAS2 ppm1987
NickelINAA10 ppm1987
PalladiumFA-ICP2 ppb1987
PlatinumFA-ICP2 ppb1987
RubidiumINAA5 ppm1987
SamariumINAA0.1 ppm1987
Sample Weight0.01 gms1987
ScandiumINAA0.2 ppm1987
SilverAAS0.2 ppm1987
SodiumINAA0.02 pct1987
TantalumINAA0.5 ppm1987
TerbiumINAA0.5 ppm1987
ThoriumINAA0.2 ppm1987
TungstenCOL2 ppm1987
TungstenINAA1 ppm1987
UraniumINAA0.2 ppm1987
VanadiumAAS5 ppm1987
YtterbiumINAA2 ppm1987
ZincAAS2 ppm1987
variablemethoddetection limityear of analysis
FluorideISE20 ppb1987
Total AlkalinityTIT1 ppm1987
UraniumLIF0.05 ppb1987
pHGCM 1987


The reconnaissance surveys were undertaken by the Geological Survey of Canada in conjunction with the Ontario Ministry of Northern Development and Mines under the Canada - Ontario Mineral Development Agreement (1985 - 1990).

E.H.W. Hornbrook directed the survey.

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

Contractor and supervisor details for sample collection
CategoryResponsible Party
Contractor:GSC personnel, Ottawa, Ontario
Supervisor:P.W.B. Friske, S. Cook and M. McCurdy
Contractor and supervisor details for sample preparation
CategoryResponsible Party
Contractor:Golder Associates, Ottawa, Ontario
Supervisor:J.J. Lynch (GSC)
Contractor and supervisor details for sample preparation
CategoryResponsible Party
Contractor:Bondar-Clegg & Company Ltd., Ottawa, Ontario Chemex Labs Limited, North Vancouver, British Columbia Acme Analytical Laboratories, Vancouver, British Columbia
Supervisor:J.J. Lynch (GSC)

Other information:

Data for platinum and palladium in lake sediments are included in this report.

Magnesium and chromium in lake sediments by flame atomic absorption spectrometry were determined with a total decomposition of the sample (4-acid digestion) followed by analysis.

Date modified: