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 2475

Open File:  2475
Previous OF publication(s):  0560, 0903
Province / Territory:  Newfoundland & Labrador
Funding Source:  Federal and Provincial (1979 and 1993); Federal (1983)
Year of Collection:  1978

Survey Type:  Regional Lake Survey
# Lake sites:  1724
# Stream sites:  0
Survey Area:  23360 km²
NTS Sheet(s):  023H, 023G

The regional lake survey for western Labrador (NTS 23H and part of 23G) was conducted during the summers of 1978 and 1982.

This report presents new data for gold and 25 other elements obtained by re-analyzing lake sediments from 1724 sites, collected at an average density of one sample per 13.6 km². Original analytical data selected from Open File 560 (published 1979) and Open File 903 (published 1983) for 13 or 15 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 2475
legend to accompany location map for Open File

Analytical Data

variablemethoddetection limityear of analysis
AntimonyINAA0.1 ppm1992
ArsenicHY-AAS1 ppm1978
ArsenicINAA0.5 ppm1992
BariumINAA50 ppm1992
BromineINAA0.5 ppm1992
CadmiumAAS0.2 ppm1982
CeriumINAA5 ppm1992
CesiumINAA0.5 ppm1992
ChromiumINAA20 ppm1992
CobaltAAS2 ppm1978
CobaltINAA5 ppm1992
CopperAAS2 ppm1978
EuropiumINAA1 ppm1992
FluorineISE40 ppm1978
GoldINAA2 ppb1992
HafniumINAA1 ppm1992
IronAAS0.02 pct1978
IronINAA0.2 pct1992
LanthanumINAA2 ppm1992
LeadAAS2 ppm1978
Loss-on-ignitionGRAV1 pct1978
LutetiumINAA0.2 ppm1992
ManganeseAAS5 ppm1978
MercuryAAS10 ppb1978
MolybdenumAAS2 ppm1978
MolybdenumINAA1 ppm1992
NickelAAS2 ppm1978
NickelINAA10 ppm1992
RubidiumINAA5 ppm1992
SamariumINAA0.1 ppm1992
Sample Weight0.01 gms1978
ScandiumINAA0.2 ppm1992
SilverAAS0.2 ppm1978
SodiumINAA0.02 pct1992
TantalumINAA0.5 ppm1992
TerbiumINAA0.5 ppm1992
ThoriumINAA0.2 ppm1992
TungstenINAA1 ppm1992
UraniumINAA0.2 ppm1992
UraniumNADNC0.2 ppm1978
VanadiumAAS5 ppm1982
YtterbiumINAA2 ppm1992
ZincAAS2 ppm1978
variablemethoddetection limityear of analysis
FluorideISE20 ppb1978
UraniumFT0.01 ppb1978
UraniumLIF0.05 ppb1982
pHGCM 1978


The original reconnaissance surveys were carried out by the Geological Survey of Canada in conjunction with the Newfoundland Department of Mines and Energy and under the terms of the Canada - Newfoundland Agreement on a Uranium Reconnaissance Program (1976-1982) and the Canada - Newfoundland Cooperative Mineral Program (1982-1984).

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

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

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

M.McCurdy edited open files and coordinated production.

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

C.C. Durham, S.J. Day, S. Carberry and R. Balma provided technical assistance.

Contractor and supervisor details for sample collection
CategoryResponsible Party
Contractor:(1978/82) Marshall Macklin Monaghan, Toronto, Ontario
Supervisor:E.Hornbrook, Y.T. Maurice, N.G.Lund (GSC)
Contractor and supervisor details for sample preparation
CategoryResponsible Party
Contractor:(1978/82) 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:(1978/82) Chemex Laboratories, Vancouver, British Columbia (1978/82) BarringerMagenta Ltd., Toronto, Ontario (1978) Atomic Energy of Canada Ltd., Ottawa, Ontario (1982) Acme Analytical Laboratories, Toronto, Ontario (1992) Bequerel Laboratories, Mississauga, Ontario
Supervisor:J.J.Lynch (GSC)

Other information:

Sample collection 1978 and 1982.

Samples analyzed in both 1978 and 1982, by the same methods, appear as 1978.

Date modified: