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File Created: 07-Apr-1988 by Gordon S. Archer (GSA)
Last Edit:  09-Jul-2020 by Karl A. Flower (KAF)

Summary Help Help

BCGS Map 104B049
Status Prospect NTS Map 104B08W
Latitude 056º 29' 28'' UTM 09 (NAD 83)
Longitude 130º 17' 41'' Northing 6261492
Easting 420281
Commodities Gold, Silver, Copper Deposit Types G07 : Subaqueous hot spring Ag-Au
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The Sulphurets Lake prospect occurs in an area underlain by rock of the Lower Jurassic Unuk River Formation, Hazelton Group. Minera- lization occurs in large blocks of k-feldspar-pyrite altered chert. These blocks are surrounded by andesite and have a strike length of about 400 metres. The chert is overlain to the north by argillite which is separated from the chert by a low angle fault. The argil- lite is also mineralized locally.

Up to 10 per cent pyrite occurs within thin to medium bedded, highly fractured and sheared chert. Thin pyrite veins host chalco- pyrite locally and contain as much as 134.57 grams per tonne gold and 838.29 grams per tonne silver. One chip sample contained 2.54 grams per tonne gold over 30.6 metres (Bridge et al, 1981). Two diamond-drill holes were completed in 1981 with the best assay being 8.40 grams per tonne gold from a 6.0 metre interval (Bridge and Melnyk W., 1982).

Another zone of mineralization, referred to as the Camp zone, is located in the bottom of the Sulphurets Valley near the west end of Sulphurets Lake. The mineralized zones are hosted in intermediate volcanic rocks and are reported to represent multiple structural corridors with intensive hydrothermal alteration and crack-seal style veins in a preserved down thrown block of epithermal-style gold and silver mineralization. Hydrothermal alteration is characterized by silica-carbonate-clay with stockwork veins and discrete chalcedonic or banded quartz-carbonate or quartz-adularia veins hosting sphalerite, galena and barite associated with local visible gold and electrum.

In 2012 and 2013, diamond drilling of the Camp zone yielded intercepts ranging from 0.84 gram per tonne gold over 394.2 metres in hole C-13-14 to 8.94 grams per tonne gold over 22 metres in hole C-12-02 (Lechner, M.J. (2014-03-31): NI 43-101 Technical Report on Initial Deep Kerr Resource).

EMPR AR 1935-B7-B12; 1961-9; 1962-8; 1964-19; 1967-31; 1968-45
EMPR ASS RPT 348, 569, 5416, 5921, 5859, *8420, *9568
EMPR EXPL 1975-E182; 1976-E182; 1977-E223; 1980-464
EMPR FIELDWORK 1987, pp. 199-209
EMPR GEM 1972-515; 1974-334
EMPR OF 1988-4
EMPR PF (*Bridge, D.A., Ferguson, L.J., Brown, M.G., (1981): 1980
Exploration Report on the Sulphurets Property for Esso Minerals
Canada Ltd. (unpublished); *Bridge, D., Melnyk, W., (1982): 1981
Canada Ltd. (unpublished); Newmont Exploration of Canada Ltd. -
Geology Map - 1:31,250 Scale, 1960's)
GSC MAP 9-1957; 1418A
GSC P 89-1E, pp. 145-154
GCNL #194, 1988
N MINER Oct. 17, 1988
NW PROSP Oct./Nov. 1988 (Northern Highlights)
Kirkham, R.V. (1963): M.Sc. Thesis, U.B.C.: The Geology and Mineral
Deposit in the Vicinity of the Mitchell and Sulphurets Glaciers
Simpson, T.M., (1983): *The Geology and Hydrothermal Alteration of
the Sulphurets Deposits, Northwest British Columbia, M.Sc. Thesis,
University of Idaho
Lechner, M.J. (2007-04-06): Mitchell Creek Technical Report
Lechner, M.J. (2008-02-29): Kerr-Sulphurets Technical Report
Lechner, M.J. (2008-03-27): Updated Mitchell Creek Technical Report
Grills, F. (2008-12-19): Kerr-Sulphurets-Mitchell Preliminary Economic Assessment 2008
Lechner, M.J. (2009-03-30): Updated KSM Mineral Resources
Grills, F. (2009-09-08): Kerr-Sulphurets-Mitchell (KSM) Preliminary Economic Assessment Addendum 2009
Lechner, M.J. (2010-01-25): January 2010 Updated KSM Mineral Resources
Grills, F. (2010-03-31): Kerr-Sulphurets-Mitchell (KSM) Prefeasibility Study
Lechner, M.J. (2011-03-29): March 2011 Updated KSM Mineral Resources
Ghaffari, H. (2011-06-15): Kerr-Sulphurets-Mitchell (KSM) Prefeasibility Study Update 2011
Huang, J. (2012-06-22): 2012 KSM (Kerr-Sulphurets-Mitchell) Prefeasibility Study
*Lechner, M.J. (2014-03-31): NI 43-101 Technical Report on Initial Deep Kerr Resource
Huang, J. (2014-11-11): 2012 KSM (Kerr-Sulphurets-Mitchell) Prefeasibility Study
Ghaffari, H. (2016-10-06): 2016 KSM (Kerr-Sulphurets-Mitchell) Prefeasibility Study Update and Preliminary Economic Assessment