The NH (ABCD) occurrence is located at an elevation of approximately 1420 metres on a northwest-facing slope to the north of Serb Creek, near its southern headwaters and approximately 8.8 kilometres southwest of the west end of McDonnell Lake.

The area is underlain by Lower Jurassic rocks of the Telkwa and Nilkitkwa Formations, which form the lower part of the Hazelton Group. The lowermost unit on the property is the Telkwa Formation, which consists of variegated red, maroon, grey to green breccias, tuffs and flows. The Nilkitkwa rocks form a barren cap over the underlying mineralized Telkwa rocks. The rocks strike northeast and dip between 25 to 30 degrees southeast. Copper-silver mineralization is found within a green to grey, very fine- to coarse-grained lapilli tuff in association with northwest-trending fault zones.

Four zones of mineralization have been identified striking northeast-southwest over a length of approximately 300 metres.

Zone A contains bornite, chalcocite and possibly digenite in fractures and calcite veinlets in the welded tuff unit. Mineralization is most abundant adjacent to a fault but extends for 30 metres northeast of the fault. Trace chalcopyrite and galena occur in a quartz carbonate veinlet near the fringe of the bornite and chalcocite mineralization.

In 1968, a sample taken across 7.6 metres of the A zone gave trace gold, 205.7 grams per tonne silver and 3.51 per cent copper (Minister of Mines Annual Report 1968, pages 121-124).

In 1973, a 0.2-metre chip sample (AB-1) assayed 0.87 per cent copper and 37.0 grams per tonne silver, whereas a grab sample (AB-2) assayed 1.76 per cent copper and 171.3 grams per tonne silver (Assessment Report 4671).

In 1987, a 3.0-metre chip sample taken from mineralization parallel to the fault zone exposed at A zone assayed 4.67 per cent copper and 268.45 grams per tonne silver (Howard, D.A., 1987).

In 2017, six samples (126501, 126502, 126551 and 126566 through 126568) from the A zone area yielded values from 104 to 572 grams per tonne silver, 0.005 to 0.177 gram per tonne gold and 2.16 to 12.00 per cent copper (Norseman Capital Ltd. [2020-07-07]: National Instrument 43-101 Technical Report, 2020 Update on the Caribou Property, Omineca Mining Division, British Columbia).

The B zone consists of calcite and small amounts of disseminated chalcocite, which occur in the matrix of a brecciated portion of the favourable tuff horizon. Small amounts of fine-grained chalcopyrite, bornite and chalcocite are present in the tuff for approximately 30 metres southwest of the breccia zone.

The C zone consists of one main vein up to approximately 20 centimetres wide and a few scattered associated veinlets mineralized with chalcocite, bornite and possibly digenite. In 1973, a float sample (AB-3) from the zone assayed 5.05 per cent copper and 375.2 grams per tonne silver (Assessment Report 4671).

The D zone contains bornite and chalcocite as disseminations and in small fractures and calcite veins in altered lapilli tuff. In 1973, a grab sample (AB-4) from the zone assayed 0.85 per cent copper and 16.1 grams per tonne silver (Assessment Report 4671).

In 2011, three rock samples, taken north of the known zones, yielded values from 0.04 to 0.59 per cent copper (Assessment Report 33352).

Work History

In 1967 and 1968, Manex Mines and Dome Babine Mines completed programs of geological mapping, geochemical sampling, an induced polarization survey and an unknown amount of diamond drilling. In 1972 and 1973, Grandora Exploration completed programs of geological mapping, geochemical sampling and 420 metres of diamond drilling on the area as the AB claims.

In 2011, UTM Exploration services completed a program of rock and soil sampling on the area as the Caribou claims.

In 2017, Norseman Capital Ltd. completed a program of prospecting and geochemical (rock and soil) sampling on the area as the Caribou property.