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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  04-Jun-2013 by Nicole Barlow (NB)

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NMI
Name ISLAND LAKE, SHERI 95, IRON HORSE, CANIM 1-4, HORSE, IRON LAKE Mining Division Clinton
BCGS Map 092P096
Status Showing NTS Map 092P15W
Latitude 051º 57' 08'' UTM 10 (NAD 83)
Longitude 120º 53' 00'' Northing 5757841
Easting 645457
Commodities Copper, Platinum, Palladium, Gold, Cobalt Deposit Types M02 : Tholeiitic intrusion-hosted Ni-Cu
Tectonic Belt Intermontane Terrane Quesnel
Capsule Geology

The Island Lake area is located 10.5 kilometres north-northwest of the village of Eagle Creek on the shore of the west end of Canim Lake. The area is underlain by a mafic and ultramafic intrusive complex related to the Triassic to Jurassic Takomkane batholith.

The area covers a strong positive regional aeromagnetic anomaly which is reflected on the ground by mafic alkalic intrusive rocks; pyroxenite, hornblendite and mafic diorite. Widespread disseminated chalcopyrite, magnetite, pyrite and pyrrhotite occur. Copper-rich sections in the pyroxenite were found in which chalcopyrite occurs with magnetite crystals within east striking, quartz-carbonate material that contains bands of massive pyrite. The shear system material is rich in gold and cobalt (Assessment Report 11088). Interest in the property in the late 1980s and early 1990s was concentrated on anomalous platinum, gold and palladium values associated with the quartz-carbonate material (Assessment Reports 17672 and 19322).

In October 1972, Pickands Mather and Company staked the Sheri claims in order to evaluate the area for copper porphyry potential. From 1972 to 1974, Pickands Mather conducted an exploration program including magnetometer, induced polarization and soil surveys, a mercury vapour survey, geological mapping and eight BQ diamond-drill holes for a total of 694 metres. H.J. Wahl gained ownership of the Sheri property, and in 1976 undertook a program on the claims including prospecting, geological mapping, soil sampling and trenching. In 1983, J.W. Morton staked the Ironhorse claims to cover the old Pickands Mather copper anomalies, and ran ground electromagnetic and limited rock chip sampling. In 1984, R.M. Durfeld examined the property for Reliant Resources. In 1985, J.W. Morton relogged and sampled core from the Pickands Mather 1974 drilling program, re-analysed it using multi-element methods, and found some anomalous values for gold and platinum. The Horse claim was staked in June 1987 by G.L. Garratt, and optioned to Relay Creek Resources. In 1988, Canevex Resources Limited completed a soil and rock geochemistry program. G.R. Peatfield examined the property and found an anomalous platinum value in a quartz-carbonate alteration zone. In 1989, Cepeda Minerals Incorporated, under option with Canavex Resources Limited, conducted a program of soil sampling and continued resampling core from the 1974 drill program. Canavex Resources Limited ran induced polarization and magnetometer surveys over geochemical and geological features located during the 1989 program.

Prospecting during 2001 near the centre of an area anomalous in platinum from soil sampling resulted in the discovery of several angular mineralized boulders in the glacial till. The mineralized olivine-pyroxenite boulders routinely grade 0.50 to 0.75 per cent copper, 0.40 to 0.75 gram per tonne gold and 0.30 to 0.60 gram per tonne platinum group metals (PR REL Eastfield Resources Ltd., July 18, 2002).

In 2004, Argent commissioned a 603-kilometre airborne geophysical survey on the

Iron Lake property, from which several electromagnetic conductors were detected. An

initial program of diamond drilling was completed in March 2005, in which four holes

totalling 504.7 metres were drilled. Massive sulphide intercepts varying in

thickness from 1.2 to 6.1 metres were obtained in two of the holes. The massive

sulphide intercepts are largely pyrrhotite with lesser chalcopyrite and up to 0.1

per cent nickel and 0.13 per cent cobalt over individual 1.4-metre sample intervals

(Assessment Report 28230).

In 2006, a diamond drill program totalling 681 metres over five holes was completed.

Results showed that the Iron Lake property had potential for copper and perhaps

nickel massive sulphides (cobalt rich) and also for weakly sulphide-mineralized

ultramafic rock containing economic concentrations of copper, gold, palladium and

platinum (Assessment Report 29078).

In November 2008, Cobre Exploration Corporation funded a geochemical soil sampling

program on the Iron Lake property, entailing the collection and analysis of 478 soil

samples. Results indicated an area of elevated magnesium content in soil with

associated copper and platinum anomalies (Assessment Report 30800).

In 2011, a program of rock sampling and induced polarization (IP) surveying was

completed on the property. A number of new anomalies were apparent in this work. Two

significant chargeability anomalies and a total magnetic field anomaly stood out

(Assessment Report 32717).

In 2012, an exploration program including 23.9 kilometres of IP magnetometer

surveying and rock sampling was completed. The results of this work included the

discovery of two strong IP chargeable and magnetic targets in the ultramafic rocks

and two chargeable and magnetic anomalies. All rock samples have been extremely

similar in their petrology and metal content. The average of eight samples collected

to date is 0.71 per cent copper, 0.7 gram per tonne gold and 324 parts per billion

platinum and palladium (V STOCKWATCH, February 28, 2013).

Bibliography
EMPR ASS RPT 4734, 4821, 6122, *11088, 14949, *17672, 19322, 21583, *28230, *29078, *30800, *32717
EMPR GEM 1973-282; 1974-229; 1976-E133
EMPR OF 2002-15
GSC MAP 1278A
PR REL Eastfield Resources Ltd., July 18, 2002
V STOCKWATCH, Feb. 28, 2013

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