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Ministry of Energy Mines and Responsible for Core Review

104F/G

 

NTS 104 F/G - Sumdum/Telegraph Creek


BC RGS 19 / GSC OF 1646 / BCGS OF 2000-14 / BCGS GF2003-19 / BCGS GF2003-20 / GBC 2011-2  / GBC 2012-2 / GBC 2012-3 / GBC 2012-6 / GBC 2012-7 / GBC 2013-3

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The Sumdum/Telegraph Creek (NTS 104F/G) reconnaissance-scale stream sediment and water survey was completed in 1987 and the resulting field and analytical data were released in 1988. A total of 1286 sediment and 1254 water samples were collected from 1218 sample sites.

 

BC Geological Survey Open File 2000-14 presents new analytical data for 43 different elements from a regional stream sediment and water geochemistry survey conducted by the British Columbia Geological Survey on the Queen Charlotte Islands during 1999.  The survey covers parts of seven 1:50,000 NTS map sheets in the Graham Island (NTS 103F) and the Hecate Strait (NTS 103G) areas: 103F/01 (Skidegate Channel), 103F/07E (Rennell Sound), 103F/08 (Yakoun Lake), 103F/09 (Port Clements, 103F/10E (Awun Lake), 103G/04 (Cumshewa Inlet) and 104G/05 (Lawnhill).  Details on the geology and mineral potential of the Queen Charlotte Islands are described by Lefebure (1998).

 

BC Geological Survey GeoFile 2003-19 shows new analytical data for 37 new elements.  Silver data from previous survey is not comparable to results in this survey because the newer method is more sensitive to silver.  The Queen Charlotte samples show a number of clusterings which suggest the presence of epithermal gold (Ag-Hg-Sb), others show a VMS signature and a Cu-Mo-Au cluster.  A large cluster of drainage basins show elevated values near a Ag-Au-Zn-Cu-Ba-Pb VMS showing (the Cimadoro showing, MINFILE 103F 052).

 

BC Geological Survey GeoFile 2003-20 describes the re-analysis of RGS data from the Iskut River region.  Selected elements are grouped into mineral deposit types and three associations are found in this area: As-Sb-Hg-Ag clusters for epithermal sub-aqueous hot spring massive sulphides, Cu-Mo-Ag-Au for Cu-Mo Porphyries and Ni-Co-Mg for Cu-Ni intrusive deposits.

 

Geoscience BC Report 2011-2 reports on the Northern BC Reanalysis Project -a continuation of a series of large-scale reanalysis initiatives that have been sponsored by Geoscience BC since 2007.  Recognized as a cost-effective means of updating information collected during older government funded regional geochemical surveys, these programs have significantly improved the BC geochemical database by providing a wide range of new analytical information at improved detection levels plus greater data compatibility with analytical methods currently being employed.  Digital data file includes new ICP-MS analytical results for a total of 7,651 stream and lake sediment samples. 

 

Geoscience BC 2012-2 presents the results of the QUEST-Northwest Block 1 airborne magnetic survey, located between the communities of Dease Lake and Iskut.  This dataset was collected by Aeroquest Airborne over the summer and fall of 2011.  The survey was flown with a line spacing of 250 m., and the total survey coverage is 27,012 line-km. 

 

Geoscience BC 2012-3 presents the results of the QUEST-Northwest Block 2 airborne magnetic survey, located near the community of Telegraph Creek.  This dataset was collected by Geo Data Solutions Inc. over the summer and fall of 2011.  The survey was flown with a line spacing of 250 m, and the total survey coverage is 11,345 line-km.

 

Geoscience BC 2012-6 presents New INAA results generated by the QUEST-Northwest Project have been provided in the Microsoft(r) Excel (XLS) file GBC REPORT 2012-06.XLS.


Geoscience BC Report 2012-7 reports on new infill stream based geochemical surveys plus the reanalysis of over 2400 sample pulps from government funded surveys that were originally completed in NTS map sheets 104F, G and K during the mid-1980s. Geoscience BC Report 2012-7 includes results of the 2011 infill sampling programs. Data generated by the reanalysis work was released in April 2012 (GBC Reports 2011-5 and 2011-6).

 

Geoscience BC 2013-3 presents the results of the QUEST-Northwest Block 3 airborne magnetic survey, located near the community of Iskut, BC. Geo Data Solutions Inc. flew the survey during July and August of 2012. The survey was flown at a line spacing of 250 m, and the total survey coverage is 5746 line-km.

 

The report also includes 2200 line-km of airborne magnetic data purchased from New Chris Minerals Ltd. This dataset was collected in late 2011 and early 2012 at a 100 m line-spacing, and lies in the center of the QUEST-Northwest Block 3 area.

Analytical Data
Sediments Sediments
element method detection limit element method detection limit
Zinc AAS 2 ppm Loss on Ignition GRAV 0.10%
Copper AAS 2 ppm Fluoride ION 40 ppm
Lead AAS 2 ppm Barium AAS-H 0.2 ppm
Nickel AAS 2 ppm Gold FA 2 ppb
Cobalt AAS 2 ppm Iron AAS 0.02%
Silver AAS 0.2 ppm Molybdenum AAS 1 ppm
Manganese AAS 5 ppm Uranium NADNC 0.5 ppm
Tin AAS 1 ppm
Tungsten COLOR 1 ppm Waters
Mercury AAS-F 10 ppb element method detection limit
Arsenic AAS-H 0.2 ppm pH GCE 0.1
Antimony AAS-H 0.2 ppm Uranium LIF 0.05 ppb
Cadmium AAS 0.2 ppm Fluoride ION 20 ppb
Vanadium AAS 5 ppm Sulphate TURB 1 ppm

 

ICP-MS
Sediments
Element Detection Limit Units
Aluminum Al 0.01 %
Antimony Sb 0.02 ppm
Arsenic As 0.1 ppm
Boron B 20 ppm
Barium Ba 0.5 ppm
Bismuth Bi 0.02 ppm
Cadmium Cd 0.01 ppm
Calcium Ca 0.01 %
Chromium Cr 0.5 ppm
Cobalt Co 0.1 ppm
Copper Cu 0.01 ppm
Gallium Ga 0.1 ppm
Gold Au 0.2 ppb
Iron Fe 0.01 %
Lanthanum La 0.5 ppm
Lead Pb 0.01 ppm
Magnesium Mg 0.01 %
Manganese Mn 1 ppm
Mercury Hg 5 ppb
Molybdenum Mo 0.01 ppm
Nickel Ni 0.1 ppm
Phosphorus P 0.001 %
Potassium K 0.01 %
Scandium Sc 0.1 ppm
Selenium Se 0.1 ppm
Silver Ag 2 ppb
Sodium Na 0.001 %
Strontium Sr 0.5 ppm
Sulphur S 0.02 %
Tellurium Te 0.02 ppm
Thallium Tl 0.02 ppm
Thorium Th 0.1 ppm
Titanium Ti 0.001 %
Tungsten W 0.05 ppm
Uranium U 0.05 ppm
Vanadium V 2 ppm
Zinc Zn 0.1 ppm
Beryllium Be 0.1 ppm
Cerium Ce 0.1 ppm
Cesium Cs 0.02 ppm
Germanium Ge 0.1 ppm
Hafnium Hf 0.02 ppm
Indium In 0.02 ppm
Lithium Li 0.1 ppm
Niobium Nb 0.02 ppm
Rubidium Rb 0.1 ppm
Rhenium Re 1 ppb
Tin Sn 0.1 ppm
Tantalum Ta 0.05 ppm
Yttrium Y 0.01 ppm
Zirconium Zr 0.1 ppm
Platinum Pl 2 ppb
Palladium Pd 10 ppb
 
 
INAA Sediments
Element Detection Limit Units 
Gold Au 2 ppb
Silver Ag 2 ppm
Arsenic As 0.5 ppm
Barium Ba 50 ppm
Bromine Br 0.5 ppm
Cadmium Cd 5 ppm
Cerium Ce 5 ppm
Cobalt Co 5 ppm
Chromium Cr 20 ppm
Cesium Cs 0.5 ppm
Europium Eu 1 ppm
Iron Fe 0.2 pct
Hafnium Hf 1 ppm
Iridium Ir 50 ppb
Lanthanum La 2 ppm
Lutetium Lu 0.2 ppm
Molybdenum Mo 1 ppm
Sodium Na 1 pct
Nickel Ni 10 ppm
Rubidium Rb 5 ppm
Antimony Sb 0.1 ppm
Scandium Sc 0.2 ppm
Selenium Se 5 ppm
Samarium Sm 0.1 ppm
Tin Sn 100 ppm
Tantalum Ta 0.5 ppm
Terbium Tb 0.5 ppm
Tellurium Te 10 ppm
Thorium Th 0.2 ppm
Titanium Ti 100 ppm
Uranium U 0.2 ppm
Tungsten W 1 ppm
Ytterbium Yb 2 ppm
Zinc Zn 100 ppm
Zirconium Zr 200 ppm
Weight Wt 0.01 g

Acknowledgements

The 1987 survey was undertaken by the British Columbia Ministry of Energy, Mines and Petroleum Resources (MEMPR) in conjunction with the Geological Survey of Canada (GSC).  Funding was provided by the GSC under a "Letter of Understanding" for a co-operative project and by the Canada - British Columbia Mineral Development Agreement (1985 - 1989).

 

E.H.W. Hornbrook and P.W.B. Friske directed and coordinated the activities of the GSC staff. P.F. Matysek directed and coordinated the MEMPR activities. 

 

The following contracts for collection, sample preparation and analysis were supervised by the MEMPR and GSC staff.

 

COLLECTION:  McElhanney Engineering Services Limited, Vancouver, B.C.
J.L. Gravel (MEMPR)
PREPARATION:  Kamloops Research and Assay Lab, Kamloops, B.C.
J.J. Lynch (GSC) 
ANALYSIS: Bondar Clegg and Company Ltd., North Vancouver, B.C. (Sediments)
Barringer Magenta, Calgary, Alta. (Waters)
J.J. Lynch (GSC) and P.F. Matysek (MEMPR)