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Ministry of Energy Mines and Responsible for Core Review



NTS 103 O/P - Nass River

2/43 / GSC OF 773/734

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
INAA Data 

detection limit


detection limit


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


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)

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.