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 2471

Open File:  2471
Previous OF publication(s):  0510
Province / Territory:  Newfoundland & Labrador
Funding Source:  Federal and Provincial (1978 and 1990)
Year of Collection:  1977

Survey Type:  Regional Lake Survey
# Lake sites:  825
# Stream sites:  0
Survey Area:  14305 km²
NTS Sheet(s):  013F

The regional lake survey for central Labrador (NTS 13F) 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 825 sites, collected at an average density of one sample per 17.3 km². Original analytical data selected from Open File 510 (published 1978) for 13 elements plus loss-on-ignition in sediments, and uranium, fluoride, and pH values in concomitant waters are also included in this report.

location map for Open File 2471
legend to accompany location map for Open File

Analytical Data

variablemethoddetection limityear of analysis
AntimonyINAA0.1 ppm1990
ArsenicCOL1 ppm1977
ArsenicINAA0.5 ppm1990
BariumINAA50 ppm1990
BromineINAA0.5 ppm1990
CeriumINAA5 ppm1990
CesiumINAA0.5 ppm1990
ChromiumINAA20 ppm1990
CobaltAAS2 ppm1977
CobaltINAA5 ppm1990
CopperAAS2 ppm1977
EuropiumINAA1 ppm1990
FluorineISE40 ppm1977
GoldINAA2 ppb1990
HafniumINAA1 ppm1990
IronAAS0.02 pct1977
IronINAA0.2 pct1990
LanthanumINAA2 ppm1990
LeadAAS2 ppm1977
Loss-on-ignitionGRAV1 pct1977
LutetiumINAA0.2 ppm1990
ManganeseAAS5 ppm1977
MercuryCV-AAS10 ppb1977
MolybdenumAAS2 ppm1977
MolybdenumINAA1 ppm1990
NickelAAS2 ppm1977
NickelINAA10 ppm1990
RubidiumINAA5 ppm1990
SamariumINAA0.1 ppm1990
Sample WeightINAA0.01 gms1990
ScandiumINAA0.2 ppm1990
SilverAAS0.2 ppm1977
SodiumINAA0.02 pct1990
TantalumINAA0.5 ppm1990
TerbiumINAA0.5 ppm1990
ThoriumINAA0.2 ppm1990
TungstenINAA1 ppm1990
UraniumNADNC0.2 ppm1977
UraniumINAA0.2 ppm1990
Ytterbium1 ppm1990
ZincAAS2 ppm1977
variablemethoddetection limityear of analysis
FluorideISE20 ppb1977
UraniumFT0.01 ppb1977
pHGCM0 1977


The reconnaissance surveys were managed by the Geological Survey of Canada in conjunction with the Newfoundland Department of Mines and Energy under the terms of the Canada - Newfoundland Agreement on a Uranium Reconnaissance Program (1976-1982). Fisheries and Environment Canada provided funds for the determination of mercury.

The reanalysis program was undertaken under the Canada - Newfoundland Cooperation Agreement on Mineral Development (1990-1994).

E.H.W. Hornbrook directed the original survey.

P.W.B. Friske coordinated the activities of contract and Geological Survey of Canada staff under the reanalysis program.

M.McCurdy edited open files and coordinated production.

H. Gross and S.W. Adcock provided computer processing support.

C.C. Durham, H.Karam, S.J. Day and S. Carberry provided technical assistance.

Contractor and supervisor details for sample collection
CategoryResponsible Party
Contractor:Marshall Macklin Monaghan, Toronto, Ontario
Supervisor:E.Hornbrook, Y. Maurice (GSC)
Contractor and supervisor details for sample preparation
CategoryResponsible Party
Contractor:(1977) Golder Associates, Ottawa, Ontario (1992) Bondar-Clegg & Company Limited, Gloucester, Ontario
Supervisor:J.J. Lynch (GSC)
Contractor and supervisor details for sample preparation
CategoryResponsible Party
Contractor:(1977) Chemex Laboratories, Vancouver, British Columbia (1977) Barringer Research, Toronto, Ontario (1977) Atomic Energy of Canada, Ottawa, Ontario (1992) Bondar-Clegg & Company Limited, Gloucester, Ontario
Supervisor:J.J. Lynch (GSC)

Other information:
Date modified: