The Coul (Creek) showing occurs in an area of Lower Jurasssic rocks of the Hazelton Group.
The Creek showing occurs in mudstone and debris flow units which physically, and possibly stratigraphically, underlie the felsic volcanic unit(s). It was drilled in 1991 by Granges Inc and includes a roughly 8-metre interval of mudstone with possibly exhalative bedded pyrite which averages 0.9 gram per tonne gold (Assessment Report 22113). It is reported that unless the sequence is overturned, the showing is stratigraphically below the Mount Dilworth Formation and therefore not in the same stratigraphic position as the Eskay Creek deposit. However, the rocks are physically similar to the 'Eskay Creek' stratigraphy and should be a prime exploration target.
Work History
In 1989, detailed work by Granges Inc involved establishing control grids with 100 metre spaced lines on the 'R' Grid of the Coul 1 claim, which covered the Creek showing. Three holes totalling 344.43 metres were drilled on the Creek showing.
In 1990, remapping on the 'R' Grid verified favourable Eskay stratigraphy. Drill targets were established from geological, geochemical and geophysical data. Three holes totalling 656.6 meters were drilled but yielded discouraging results.
In 1991 on the 'R' grid, Alice Lake showing (about 500 metres south of the Creek showing) and the Creek showing were tested by three holes and two drill holes respectively, totalling 310.9 meters.
In 1994, R grid (Coul 1) work was aimed at rhyolite to the north in extension of earlier R grid work.
In 2020, Eskay Mining Corp. completed a program of prospecting, rock sampling, ground and airborne geophysical surveys and 4335 metres of diamond drilling in 20 holes on the area as part of the Sib-Corey-North Mitchell property. The geophysical surveys consisted of a 911.7 line-kilometre airborne electromagnetic survey, a 55.85 line-kilometre induced polarization survey and a 43.19 line-kilometre magnetotelluric survey. Drilling was performed on the TV (MINFILE 104B 385) and Jeff (MINFILE 104B 525) occurrences.
