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File Created: 23-Nov-2012 by Garry J. Payie (GJP)
Last Edit:  09-Jul-2020 by Karl A. Flower (KAF)

Summary Help Help

BCGS Map 104B059
Status Prospect NTS Map 104B09W
Latitude 056º 30' 38'' UTM 09 (NAD 83)
Longitude 130º 14' 58'' Northing 6263590
Easting 423100
Commodities Copper, Gold, Molybdenum, Lead, Zinc Deposit Types L04 : Porphyry Cu +/- Mo +/- Au
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The Icefield zone is underlain by Lower Jurassic Hazelton Group rock of the Unuk Formation intruded by Early Jurassic feldspar porphyritic monzonite.

At the Icefield zone, disseminated chalcopyrite, minor pyrite, and trace molybdenite occur in intensely silicified rocks and hydrothermal breccias similar to the Sulphurets zone. The zone appears to be positioned in the footwall of the Sulphurets fault and is likely the continuation of the Sulphurets deposit, which is still open to the northeast of its last drill hole, some 500 metres southwest of the Icefield zone.

In 2005, two holes were put down on the zone by owner Seabridge Gold. These were inclined towards each other in order to test the zone, which lies along strike of the Sulphurets zone. In hole IF-05-01, fine disseminated chalcopyrite occurs in variably silicified and brecciated rocks down to 121 metres, with grades averaging on the order of 0.2 per cent copper and 0.2 gram per tonne gold. Below this depth, there is a sharp change in mineral tenor, with copper falling and gold increasing. Hole IF-05-02 intersected a phyllic altered, mylonitized tuff below oxidized till of the same lithology. Low copper and gold grades are associated with silicification along veins, crackle breccias and hydrothermal breccias. Below a depth of 34.4 metres anomalous copper and gold values are accompanied by anomalous arsenic, lead, and zinc concentrations. A 126.0 metre drill interval assayed 0.03 per cent copper and 0.51 gram per tonne gold (Assessment Report 28062).

In 2012, diamond drilling yielded intercepts including 0.49 and 0.43 gram per tonne gold with 0.04 and 0.06 per cent copper over 195.2 and 237.6 metres, respectively, in hole IF-12-03 and IF-12-04 (Lechner, M.J. (2014-03-31): NI 43-101 Technical Report on Initial Deep Kerr Resource).

Refer to Sulphurets (104B 182) and Mitchell (104B 103) for details of related mineralization and KSM property work history.

EMPR AR 1935-B7-B12; 1961-9; 1962-8; 1964-19; 1967-31; 1968-45
EMPR EXPL 1975-E182; 1976-E182; 1977-E223; 1980-464; 2004-31; 2005-32
EMPR FIELDWORK 1987, pp. 199-209
EMPR GEM 1970-65; 1971-36; 1972-515; 1974-334
EMPR OF 1988-4; 1998-8-F, pp. 1-60
EMR MIN BULL MR 223 B.C. 322
GSC MAP 9-1957; 1418A
GSC P 89-1E, pp. 145-154
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