A resource estimate for the Detour gold project in northeastern Ontario shows significant amounts of mineralization are still in existence around the dormant gold mine.
The calculation was part of an ongoing scoping study by Pelangio Mines (PLG-V) on the project, 160 km northeast of Timmins. The resource estimate, by consulting geologist Eric Kallio, now credits the property’s West Zone with an indicated resource of 2.5 million tonnes grading 2 grams gold per tonne. That resource, based on a 0.65 gram-per-tonne cutoff grade, is immediately west of the old open pit, and includes drill-indicated resources down to 250 metres vertical depth.
A further 9.4 million tonnes in the West Zone is classed as an inferred resource, and averages 1.8 grams gold per tonne. More inferred resources — 5.9 million tonnes at 1.6 grams — are 500 metres to the west in the Calcite Zone.
The same resource estimate also calculated inferred figures for deeper mineralized zones that are potentially amenable to underground mining. The main part of the deeper resource is in the four Main Zones — Main, Main West, No. 3 and No. 4 — which together hold 1.4 million tonnes grading 4.8 grams gold per tonne.
The QK zone carries 1.2 million tonnes at an average 4.6 grams gold per tonne, and the Pillow Zone another 5.5 million tonnes at 2.8 grams per tonne. Main, QK, and Pillow Zone resources are mainly near existing drifts on the old underground mine’s 330-metre and 560-metre levels. The decline, which goes to 785 metres depth, and all the workings are currently flooded.
There are untested dip and strike extensions on several of the deep zones, which Pelangio plans to drill in a forthcoming program.The estimate excluded a number of isolated or undeveloped mineralized blocks, as well as mineralization in pillars and other areas where mining might destabilize existing mine workings.
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