Drilling by Marathon PGM (MAR-V) at the Dunlop property, just east of Marathon, Ont., has intersected wide zones of low-grade copper and silver mineralization.
Marathon’s program, an early-stage drilling campaign of 13 holes, tested an induced-polarization anomaly on the property. The holes were drilled in two east-west “fence” patterns across the anomaly, which coincides with a breccia zone on the contact between a gabbro and older volcanic and sedimentary rocks.
The mineralization consists of disseminated sulphides and occupies zones from 60 to 200 metres wide. Copper grades mainly average 0.1% to 0.2% across the whole width of the zone, although there are local high-grade intervals in the drill cores. The also contain between 1 gram and 3 grams silver per tonne.
Unlike Marathon’s main project in the Coldwell intrusive complex, immediately to the north of the Dunlop property, there are negligible platinum-group elements in this mineralization. Marathon geologists are assuming the deposits are unrelated.
Marathon bought the property last March from well-known Manitoba prospector Bruce Dunlop, who received $250,000 and retains a 3% net smelter return. The ground straddles Highway 17 just east of the Marathon townsite and is surrounded by staked ground held by Marathon.
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