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 2645

Open File:  2645
Previous OF publication(s):  1636, 0997
Province / Territory:  Newfoundland & Labrador
Funding Source:  Federal (1984); Federal and Provincial (1988 and 1993)
Year of Collection:  1983

Survey Type:  Regional Lake Survey
# Lake sites:  954
# Stream sites:  0
Survey Area:  14413 km²
NTS Sheet(s):  013K

The regional lake survey for central Labrador (NTS 13K) was conducted during the summer of 1983.

This report presents analytical and statistical data for gold and 25 other elements obtained by re-analyzing lake sediments from 954 sites, collected at an average density of one sample per 15.1 km². Original analytical data selected from Open File 997 (published 1983) for 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 2645
legend to accompany location map for Open File

Analytical Data

variablemethoddetection limityear of analysis
AntimonyINAA0.1 ppm1992
ArsenicHY-AAS1 ppm1983
ArsenicINAA0.5 ppm1992
BariumINAA50 ppm1992
BromineINAA0.5 ppm1992
CadmiumAAS0.2 ppm1983
CeriumINAA5 ppm1992
CesiumINAA0.5 ppm1992
ChromiumINAA20 ppm1992
CobaltAAS2 ppm1983
CobaltINAA5 ppm1992
CopperAAS2 ppm1983
EuropiumINAA1 ppm1992
FluorineISE40 ppm1983
GoldINAA2 ppb1992
HafniumINAA1 ppm1992
IronAAS0.02 pct1983
IronINAA0.2 pct1992
LanthanumINAA2 ppm1992
LeadAAS2 ppm1983
Loss-on-ignitionGRAV1 pct1983
LutetiumINAA0.2 ppm1992
ManganeseAAS5 ppm1983
MercuryAAS10 ppb1983
MolybdenumAAS2 ppm1983
MolybdenumINAA1 ppm1992
NickelAAS2 ppm1983
NickelINAA10 ppm1992
RubidiumINAA5 ppm1992
SamariumINAA0.1 ppm1992
Sample Weight0.01 gms1983
ScandiumINAA0.2 ppm1992
SilverAAS0.2 ppm1983
SodiumINAA0.02 pct1992
TantalumINAA0.5 ppm1992
TerbiumINAA0.5 ppm1992
ThoriumINAA0.2 ppm1992
TungstenINAA1 ppm1992
UraniumINAA0.2 ppm1992
UraniumNADNC0.5 ppm1983
VanadiumAAS5 ppm1983
YtterbiumINAA2 ppm1992
ZincAAS2 ppm1983
variablemethoddetection limityear of analysis
FluorideISE20 ppb1983
UraniumLIF0.05 ppb1983
pHGCM 1983


The original reconnaissance surveys werecarried out by the Geological Survey of Canada in conjunction with the Newfoundland Department of Mines and Energy under the terms of the Canada - Newfoundland Cooperative Mineral Program (1982-1984).

Open File 1636 (published 1989) included reanalysis data for part of NTS 13K and was funded under the Canada - Newfoundland Mineral Development Agreement (1984-1989). Analyses of remaining archive samples were 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:(1983) Marshall Macklin Monaghan, Toronto, Ontario
Supervisor:E.Hornbrook, N.G.Lund (GSC)
Contractor and supervisor details for sample preparation
CategoryResponsible Party
Contractor:(1983) Golder Associates, Ottawa, Ontario (1992) Bondar-Clegg & Company, Gloucester, Ontario
Supervisor:J.J.Lynch (GSC)
Contractor and supervisor details for sample preparation
CategoryResponsible Party
Contractor:(1983) Chemex Laboratories, Ltd. North Vancouver, British Columbia (1983) Acme Analytical Laboratories, Vancouver, British Columbia (1988) Bondar-Clegg & Company Limited, Gloucester, Ontario (1992) Bequerel Laboratories, Mississauga, Ontario
Supervisor:J.J.Lynch (GSC)

Other information:
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