|
The Nass River (NTS 103O/P) reconnaissance-scale stream sediment and water survey was completed in 1978 and the resulting field and analytical data were released in 1979. A total of 1880 sediment and 1863 water samples were collected from 1779 sample sites.
As part of the RGS Archive Program, 1860 archived sediment pulps were re-analyzed by epi-thermal INAA and this new data along with original survey results were re-published in 1995. |
 |
| Original Analytical Data |
| Sediments |
|
Sediments |
| element |
method |
detection limit |
|
element |
method |
detection limit |
| Zinc |
AAS |
2 ppm |
|
Tungsten |
COLOR |
2 ppm |
| Copper |
AAS |
2 ppm |
|
Iron |
AAS |
0.02% |
| Lead |
AAS |
2 ppm |
|
Molybdenum |
AAS |
1 ppm |
| Nickel |
AAS |
2 ppm |
|
Uranium |
NADNC |
0.5 ppm |
| Cobalt |
AAS |
2 ppm |
|
|
|
|
| Silver |
AAS |
0.2 ppm |
|
Waters |
| Manganese |
AAS |
5 ppm |
|
pH |
GCE |
0.1 |
| Arsenic |
AAS-H |
0.5 ppm |
|
Uranium |
LIF |
0.05 ppb |
| Mercury |
AAS-F |
10 ppb |
|
Fluoride |
ION |
20 ppb |
| element |
detection limit |
|
element |
detection limit |
|
element |
detection limit |
| Gold |
2 ppb |
|
Hafnium |
1 ppm |
|
Sodium |
0.10% |
| Antimony |
0.1 ppm |
|
Iron |
0.20% |
|
Tantalum |
0.5 ppm |
| Arsenic |
0.5 ppm |
|
Lanthanum |
5 ppm |
|
Terbium |
0.5 ppm |
| Barium |
100 ppm |
|
Lutetium |
0.2 ppm |
|
Thorium |
0.5 ppm |
| Bromine |
0.5 ppm |
|
Molybdenum |
1 ppm |
|
Tungsten |
2 ppm |
| Cerium |
10 ppm |
|
Nickel |
10 ppm |
|
Uranium |
0.2 ppm |
| Cesium |
0.5 ppm |
|
Rubidium |
5 ppm |
|
Ytterbium |
2 ppm |
| Chromium |
5 ppm |
|
Samarium |
0.5 ppm |
|
Zirconium |
200 ppm |
| Cobalt |
5 ppm |
|
Scandium |
0.5 ppm |
|
|
|
|
Acknowledgements
The 1978 survey was managed and funded by the British Columbia Ministry of Energy, Mines and Petroleum Resources (MEMPR) as part of the Regional Geochemical Survey Program. Data management was provided by the Geological Survey of Canada (GSC).
|
|
N.C. Carter directed MEMPR activities and E.H.W. Hornbrook directed GSC activities. Contracts were let to the following companies for sample collection, preparation and analysis and were managed by staff of the MEMPR.
| COLLECTION: |
SEMCO Ltd., Vancouver, B.C.
T.E. Kalnins, N.C. Carter, and W.M. Johnson (MEMPR) |
| PREPARATION: |
MINEN Laboratories Ltd., North Vancouver, B.C.
W.M. Johnson (MEMPR) |
| ANALYSIS: |
Chemex Laboratories Ltd., North Vancouver, B.C. (Sediments)
Novatrack Analysts Ltd., Vancouver, B.C. (U in Sediments)
Bondar Clegg Ltd., North Vancouver, B.C. (Waters)
W.M. Johnson (MEMPR) | |
|
Initiated in 1990, the RGS Archive Program was conducted by the MEMPR and was funded in part by the Canada/British Columbia Mineral Development Agreement (1985-1990). P.F. Matysek and W. Jackaman directed the activities of MEMPR staff and managed the following sample preparation and analytical contracts.
| PREPARATION: |
Rob Phillips, Ottawa, Ont. |
| ANALYSIS: |
Becquerel Laboratories, Mississauga, Ont. | | |
