The April occurrence is located about 3.5 kilometres west of Chutanli Lake, approximately 101 kilometres southwest of Vanderhoof.

The showing is hosted by Middle Jurassic Hazelton Group rocks about 1 kilometre north of an east-trending body of Eocene granodiorite. The hostrock is a grey-weathering, thinly bedded tuffaceous limestone that strikes 305 degrees and dips steeply to the northeast. Mineralization consists of a lens or vein of massive to semi-massive sulphide that dips vertically and strikes at 320 degrees. The vein is exposed discontinuously over a 15-metre strike length and varies in width up to a maximum of 1.8 metres. It pinches out abruptly or is faulted off to the north and is covered by overburden to the south.

Subcrop of narrow quartz-pyrite-chalcopyrite veins occurs along strike to the south. Sulphide minerals present, in order of abundance, are sphalerite, pyrrhotite, pyrite, galena, arsenopyrite and chalcopyrite.

Work History

In the late 1960s and early 1970s, Rio Tinto conducted soil sampling, magnetometer, VLF, airborne electromagnetic (EM) and induced polarization (IP) surveys on their C claims which covered the April (CH) showing area and the C showing (093F 004) area. The IP surveys identified extensive zones of high chargeability (Assessment Reports 2097, 2568, 2683 and 5524). In 1969, Rio Tinto carried out geological mapping, magnetometer, and IP surveying over 26 line-kilometres, collection of 1000 soil samples, 7.6 metres of trenching, and 686 metres of diamond drilling. Four zones of high chargeability were found. In 1970, Rio Tinto completed more geological mapping, 84 line-kilometres of IP surveying, and 5 line-kilometres of magnetometer surveying. They also collected 1272 geochemical samples, dug nine trenches, and completed 340 metres of diamond drilling. The soil sampling showed scattered medium to strong copper-molybdenum anomalies and weak lead-zinc-nickel anomalies. In 1971, the assessment work by Rio Tinto included: 316 square kilometres of airborne magnetometer surveying, and 256 metres of surface diamond drilling.

In 1980, on the April and May claims, Granges Inc. collected a total of 389 soil samples, which resulted in the discovery of a coincident silver-lead-zinc-copper anomaly and a second, more diffuse anomaly to the west. In 1981, Granges conducted an airborne geophysical survey; it did not outline any electromagnetic anomalies on the Chutanli Lake project, though several magnetic trends were located.

In 1984, Granges diamond-drilled three holes, totalling 156.67 metres, on the April occurrence. Drilling yielded intercepts including 1.4 grams per tonne gold, 573.5 grams per tonne silver and 15.96 per cent zinc over 0.3 metre and 1.25 grams per tonne gold over 15.85 metres in hole April-1, whereas chip sampling of trenches yielded 2.40 and 2.50 grams per tonne gold, 12.5 and 22.5 grams per tonne silver with 5.62 and 6.0 per cent zinc over 1.75 and 1.20 metres, respectively (Assessment Report 14281).

In 1990, Placer Dome Inc. collected 248 soil samples, as well as conducting a 3.64 line-kilometre magnetometer and 3.7 line-kilometre VLF-EM survey on two grids on their CH claims. The Main grid was located about 1.3 kilometres east of the plotted location of the April showing and the Road grid located about 400 metres northeast of the plotted location of the C showing. The Main grid is just west of the C showing. Both grids contain coincident copper-gold-molybdenum soil geochemistry. Orvana later reported (Assessment Report 25069) that drilling totalled 22 drillholes on the CH property that included the previous drilling by Rio Tinto and newer drilling by Placer (in 1992). This drilling intersected a low-grade copper porphyry target. Placer drilling concentrated on IP chargeability high and magnetic high areas. Mineralization consists of up to 5 per cent quartz and quartz-carbonate stockwork with associated magnetite-pyrite-chalcopyrite and is related to various alteration types within volcanic and intrusive rock. Pyrite and chalcopyrite occur in veins and microveins in the volcanics, on fracture surfaces and as fine disseminations in intrusive rocks. Malachite occurs along fracture planes. Copper-gold rich mineralization was intersected in drillholes.

In 1991, Placer Dome completed a program geological mapping, geochemical (rock and soil) sampling and 82.0 line-kilometres of ground magnetic and electromagnetic surveying. A rock sample (C3504) from a former trench yielded 3.39 grams per tonne gold, 0.119 per cent copper and 7.25 per cent zinc (Assessment Report 22027).

Also, in 1991 and 1992, regional geochemical till sampling program for Cogema Resources occurred in the vicinity of Chutanli Lake. The samples were variously anomalous in gold, silver, arsenic, antimony, copper, lead, zinc, and molybdenum.

In 1996, Orvana Minerals Corp. collected 111 rocks from their CH property which covered the April and C showings. Orvana reported that the April showing represents epithermal vein-type mineralization. The April showing is approximately 2 metres wide and over 15 metres long. Chip samples from the April occurrence yielded up to 2.1 grams per tonne gold, 0.1 per cent copper, 0.1 per cent lead and 3.7 per cent zinc (Assessment Report 25069).

From 2008 to 2011, four assessment reports were filed by Omega Explorations on behalf Jacqueline A. McLeod on their Porphyry property. Work in the April showing area, and to the east toward the C showing, consisted mostly of soil sampling with minor ground magnetometer and rock sampling. The new prospect occurs in that area between the April and the C showing in the CH prospect area.

In 2011, Ron Bilquist conducted work on his Chutanli 1 to 3 claims where three days were spent prospecting. All old and new logging roads were traversed with the location of outcrops, glacial outwash and till noted. A total of 9 rock samples were taken and 13 geological way points were recorded.

In 2012, Redhill Resources Corp. completed a program of rock, silt, soil and biogeochemical sampling and a 63.0 line-kilometre induced polarization survey on the area as the Chutanli area of the Aspen East block of claims on the Aspen property.

In 2013, Redhill Resources conducted a drilling program on the Aspen property which consisted of 13 diamond-drill holes totalling 1785 metres of BTW size core. The Aspen property covered much of the CH property area, including the April and C showings. No drilling was performed on the April occurrence. Redhill also conducted a program of sampling on their larger claim group. A total of 49 rock, 1461 soil, 62 biogeochemistry samples, and 14 silt samples were collected. The focus of the 2013 sampling program on the Aspen property was an area between Chutanli and Brewster lakes. The 2013 sampling program detected three soil anomalies.

During 2016 through 2018, Tower Resources Ltd. completed programs of prospecting, geological mapping and geochemical (rock and till) sampling, 38 rotary drill holes, totalling 837.8 metres, 13 percussion drill holes, totalling 206.0 metres, 6 diamond drill holes, totalling 996.4 metres, and a 20.0 line-kilometre induced polarization survey on the area as the Nechako Gold property. Two rock samples (R266117 and R266210) from the April zone yielded 4.24 and 1.37 grams per tonne gold, 19.6 and 4.5 grams per tonne silver, 0.08 and 0.11 per cent copper with 7.01 and 1.55 per cent zinc, respectively (Assessment Report 37575).

Also, in 2016 and 2017, ML Gold Corp. completed programs of soil sampling and a 9.0 line-kilometre induced polarization on the surrounding area as the Aspen property.