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 1647

Open File:  1647
Previous OF publication(s):  
Province / Territory:  British Columbia
Funding Source:  Federal and Provincial
Year of Collection:  1987

Survey Type:  Regional Stream Survey
# Lake sites:  0
# Stream sites:  847
Survey Area:  10166 km²
NTS Sheet(s):  104K

The regional stream survey Tulsequah, British Columbia (NTS 104K) was conducted during the summer of 1987.

This report presents analytical and statistical data for 20 elements in stream sediments from 847 sample sites, collected at an average density of one sample per 12.0 km². Loss-on-ignition in sediments, and uranium, fluoride, and pH values in waters from these sites are included in this report.

location map for Open File 1647
legend to accompany location map for Open File

Analytical Data

variablemethoddetection limityear of analysis
AntimonyHY-AAS0.2 ppm1987
ArsenicHY-AAS1 ppm1987
BariumXRF20 ppm1987
CadmiumAAS0.2 ppm1987
CobaltAAS2 ppm1987
CopperAAS2 ppm1987
FluorineISE40 ppm1987
GoldFA-DCP1 ppb1987
IronAAS0.02 pct1987
LeadAAS2 ppm1987
Loss-on-ignitionGRAV0.2 pct1987
ManganeseAAS5 ppm1987
MercuryCV-AAS10 ppb1987
MolybdenumAAS1 ppm1987
NickelAAS2 ppm1987
SilverAAS0.2 ppm1987
TinAAS2 ppm1987
TungstenCOL2 ppm1987
UraniumNADNC0.5 ppm1987
VanadiumAAS5 ppm1987
ZincAAS2 ppm1987
variablemethoddetection limityear of analysis
FluorideISE20 ppb1987
UraniumLIF0.05 ppb1987
pHISE 1987


The reconnaissance surveys were undertaken by the British Columbia Ministry of Energy Mines and Petroleum Resources in conjunction with the Geological Survey of Canada.

Funding was provided in part by the GSC under a "Letter of Understanding" for a Cooperative Project and by the Canada - British Columbia Mineral Development Agreement (1985 - 1989).

P.F. Matysek directed the British Columbia Ministry of Energy Mines and Petroleum Resources activities.

E.H.W. Hornbrook directed the Geological Survey of Canada activities.

Contractor and supervisor details for sample collection
CategoryResponsible Party
Contractor:McElhanney Engineering Services, Vancouver, BC
Supervisor:J.L. Gravel, BCMEMPR
Contractor and supervisor details for sample preparation
CategoryResponsible Party
Contractor:Kamloops Research Assay and Laboratory Ltd., Kamloops, BC
Supervisor:Wes Johnson, BCMEMPR
Contractor and supervisor details for sample preparation
CategoryResponsible Party
Contractor:Bondar-Clegg & Company Ltd., North Vancouver, BC Barringer Magenta (Alberta), Ltd., Calgary, AB
Supervisor:P.F. Matysek, BCMEMPR

Other information:

Gold usually determined on 10-gram sample, allowing a detection limit of 1 ppb; sample weights less than 10 grams resulted in a detection limit of 2 ppb. Sample weights less that 5 grams not analyzed.

Date modified: