The 8,035 hectare Iron Lake property is located 45 kilometres northeast of 100 Mile House, BC.
Iron Lake is 100% owned by Eastfield.
Iron Lake is a copper, cobalt, gold and platinum group elements project that covers a mafic to ultramafic intrusive body of probable early Jurassic age intruding a package of mafic to intermediate volcanic and related porphyritic intrusive rocks.
The Iron Lake Complex hosts disseminated and massive sulfide mineralization of a probable magmatic origin that is significant for its copper, cobalt, gold, platinum, palladium and to a lesser extent nickel content. A prominent aeromagnetic high covering several square kilometers centered on the complex resulted in incremental exploration initiatives starting in the mid 1970's directed at porphyry copper. Significant platinum and palladium anomalies were discovered in soils in the late 1980's at which time the extremely mafic composition of the rock suite was interpreted to be permissive for magmatic PGE rich mineralization.
In 2000 mineralized olivine pyroxenite rubble was discovered while prospecting a 1989 soil site which had returned a value of 392 ppb Pd. Two rock samples were collected from the rubble field with the first sample grading 0.59% Cu, 0.04% Ni, 0.53g/t Au, and 308 ppb PGE and the second sample 0.56% Cu, 0.04% Ni, 0.54g/t Au, and 287 ppb PGE. By 2012 several prospecting initiatives had located a total of eight samples of this material with an average metal content of 7,183 ppm Cu, 696 ppb Au, 416 ppm Ni and 324 ppb Pd+Pt.
In 2004 a helicopter borne airborne survey was completed over much of the claim group and a number of conductors identified some of which were further detailed by a 2006 UTEM ground survey. Targets from both surveys were drill tested in 2005 and 2006 with significant thicknesses of pyrrhotite dominant massive sulfide being intersected (e.g. 17 metre interval in excess of 60% sulfide in hole 05-03). Base metal values, while low to moderate in grade indicate that the sulfide mix includes copper, nickel and cobalt consistent with a magmatic sulfide model. Drill sites have now been constructed preparatory to testing massive sulfide mineralization both along strike and down dip, hoping for mineral zoning which could increase the proportion of chalcopyrite and pentlandite to pyrrhotite thereby increasing the grade of copper and nickel.
Two styles of magmatic sulfide mineralization present opportunities for discovery at Iron Lake. The first being disseminated sulfide with economically significant values of copper, gold, platinum and palladium; and the second being massive sulfide with economically significant values in copper, nickel and cobalt. A hybrid of the two styles of mineralization with the full suite of elements is also possible. Sulfide minerals in the disseminated style of mineralization are accompanied with 10% to 40% magnetite.
Recent work completed in 2011, 2012 and 2013 concentrated on completing extensive new induced polarization to delineate new targets. A number of robust targets were found and an exploration permit has been issued allowing them to be drilled.
In 1987 the "Kevitsa" deposit was discovered in Finland and in 2008 it was acquired by a subsidiary of First Quantum Minerals Ltd. who put it into production in 2012. Kevitsa is a PGE and gold enriched copper, nickel deposit grading 0.41% copper, 0.31% nickel, 0.12 g/t gold, 0.24 g/t platinum and 0.18 g/t palladium. Mineralization is hosted in olivine pyroxenite and is disseminated in style and is considered to be magmatic in origin.
The Iron Lake Complex is also comparable in several respects to the Turnagain Complex in northern BC and the Tulameen Complex in southern BC. Both of these occurrences, as may be the case for Iron Lake, are thought by some workers to be Ural-Alaskan type ultramafic-mafic intrusive complexes. Complexes of this type in Russia host significant deposits of precious metals, particularly platinum, with historic alluvial platinum production alone exceeding ten million ounces.
It should also be noted that the prolific Norilsk nickel-copper-PGM deposits also in Russia are hosted in Triassic aged olivine pyroxenite, comparable in age and host rock petrology to Iron Lake.
Much of the area of the claims have been clearcut logged resulting in the establishment of excellent access to the property. The ground is typical of interior British Columbia and consists of Douglas fir, pine and spruce dominant forests occurring on a flat to undulating and moderately hilly landscape.
Disseminated Mineralized Rubble Results
Massive Sulfide Drill Intercepts
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