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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  09-Jul-2020 by Karl A. Flower (KAF)

Summary Help Help

NMI 104B8 Cu2
Name KERR D, D, KERR COPPER Mining Division Skeena
BCGS Map 104B049
Status Prospect NTS Map 104B08W
Latitude 056º 28' 17'' UTM 09 (NAD 83)
Longitude 130º 16' 28'' Northing 6259274
Easting 421488
Commodities Gold Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The Sulphurets map area lies along the western margin of the Intermontane Tectonic Belt and lies within Stikinia Terrane. The area is underlain by Lower Jurassic Unuk River Formation, Hazelton Group, volcanic and sedimentary rocks that have been folded, faulted and weakly metamorphosed, mainly during Cretaceous time. Strata are cut by at least three intrusive episodes.

The Kerr Copper mineral occurrence is reported to lie entirely within a "tectonic shear zone". This zone contains all the signifi- cant gold anomalies. The zone covers an elongate northern trending area, 800 to 900 metres wide and two kilometres long. The zone is flanked by comparatively unaltered or weakly altered, fine-grained, brownish green clastic sediments and submarine volcanics on the east, and by a thick unit of basaltic andesite on the west. The tectonic zone is typically composed of moderately to strongly altered and sheared rocks interpreted to be of volcanic, subvolcanic, or plutonic origin. Most of the altered zone can be described as a sericite schist, however andesitic tuffs and flows, feldspar porphyry dykes and possibly flows can be recognized in less altered zones. A later formed "swarm" of fine-grained weakly altered andesite dykes cut across the schistosity. Both the altered zone and dykes have been cut by faults. Minor sections of silty shale and siltstone occur on the western and eastern margin of the altered zone.

Rock types within the D zone are likely andesitic tuffs altered to sericite schist. Within the sheared zones quartz and/or pyrite veins occur and strike in a west to northwest direction. One 4 metre wide pyrite vein occurs in one such shear zone.

The D zone is located within the same fault-bounded block as the A zone (104B 194). The West Fault marks the western boundary, the A zone Fault marks the eastern boundary.

The D zone is one of the soil geochemical anomalies outlined in September 1985. Results of more detailed follow-up work in 1986 were not encouraging. Most rock chip samples contained between 0.1 and 0.5 grams per tonne gold with only one greater than 0.5 grams per tonne gold (0.85 grams per tonne) (Assessment Report 15493). Some trenching has been completed on nearby mineralized outcrops. No work was carried out here in 1987 or 1988.

EMPR ASS RPT 12471, 13369, 14614, *15493, 16616
EMPR EXPL 1983-522; 1984-386; 1985-A24,A52; 1986-C440; 1987-A15,C376
EMPR FIELDWORK 1987, pp. 199-209
EMPR INF CIRC 1986-1, pp. 14,18; 1988-1, p. 12 (BC Mineral Exploration
Review, 1985 and 1987)
EMPR OF 1988-4
EMPR PF (Newmont Exploration of Canada Ltd.: Geology Map, 1:31250
Scale, Sulphurets Gold Corporation: Prospectus, Jul.22, 1987,
Statement of Material Facts (#61/88), Jun.30, 1988; Western
Canadian Mining Corporation: Annual Report 1987, Press Release
Sept.28, 1988)
EMR MP CORPFILE (Western Canadian Mining Corporation)
GSC MAP 9-1957; 1418A
GSC P 89-1E, pp. 145-154
GCNL #70,#194, 1985; #232, 1986; #142,#144,#165,#173,#177,#182,#202,
#204, 1987; #75,#155,#156,#163,#167,#191, 1988
N MINER Nov.9,Dec.14, 1987; Sept.19,Oct.3,10,Nov.28, 1988
V STOCKWATCH Aug.27,Sept.8,11,23,27,Oct.21,23,26,Nov.16, 1987
Kirkham, R.V., (1963): The Geology and Mineral Deposits in the
Vicinity of the Mitchell and Sulphurets Glaciers, M.Sc. Thesis,
University of British Columbia
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