The Kuhn South (Southeast Extension) occurrence is located on a north-northeast–trending ridge, approximately 5.5 kilometres north of the historical community of Cassiar.

Regionally, the area is underlain by a north to north-northwest–trending series of sedimentary rocks, dipping approximately 70 to 80 degrees to the northeast, and comprised of undivided sedimentary rocks of the Neoproterozoic Stelkuz Formation (Ingenika Group), quartz arenite sedimentary rocks of the Lower Cambrian Boya Formation (Atan Group), calcareous sedimentary rocks of the Lower Cambrian Rosella Formation (Atan Group), limestone, slate, siltstone and argillite of the Cambrian to Ordovician Kechika Group and Ordovician to Silurian Road River Group, quartz arenite sedimentary rocks of the Silurian to Lower Devonian Ramhorn Group and calcareous sedimentary rocks of the Devonian McDame Group. Locally, the series of sedimentary rocks have been intruded by a quartz-feldspar porphyry related to the Lower Cretaceous Cassiar Batholith, which is exposed to the west.

Locally, the contact of a limestone and quartz-feldspar porphyry hosts garnet-actinolite-diopside (retrograde) skarn zones with disseminated to massive pyrrhotite, magnetite, sphalerite, chalcopyrite, scheelite and pyrite. The skarn zone averages 1 to 3 metres in true width along a strike of 160 to 175 degrees with a dip of approximately 65 to 80 degrees east and has been trace for over 600 metres along strike. The skarn mineralization is related to the southeast extension of the Kuhn (MINFILE 104P 071) occurrence, located approximately 1.5 kilometres to the north-northwest, and a complete description of the mode and style of mineralization can be found there.

In 1979, four samples (nos. 4, 6, 8 and 9) from occurrence area yielded values of up to 0.35 per cent copper and 0.20 per cent tungsten tri-oxide (Assessment Report 7520).

In 1980 and 1981, four channel samples, taken over a 160-metre strike length of the Kuhn South zone, yielded an average of 3.44 per cent zinc and 0.26 per cent tungsten tri-oxide over 2.0 metres (Assessment Report 10512).

In 2002, nine samples (102-907 through 102-912 and 102-916 through 102-918) taken from the Kuhn Southeast extension zone yielded from 0.03 to 0.32 per cent copper, 0.31 to greater than 1.00 per cent zinc and trace to 0.144 per cent tungsten (Assessment Report 27030).

In 2011, a chip sample (KU11AR702) from the Kuhn southeast extension zone assayed 0.266 per cent tungsten and 0.44 per cent zinc over 0.70 metre (Assessment Report 32573).

In 2016, a chip sample (16KU08) assayed 0.22 per cent tungsten and 1.23 per cent zinc over 0.22 metre (Assessment Report 36301).

In 2019, a chip sample (19KR05) assayed 4.21 per cent zinc and 0.133 per cent tungsten over 0.30 metre with anomalous values of bismuth, beryllium and indium of 0.103, 0.0065 and 0.0085 per cent, respectively (Assessment Report 38356). Elevated beryllium is reported to be possibly related to the presence of helvite and/or danalite. Also at this time, two other chip samples (19KR8 and 19KR3), located approximately 50 metres west and 100 metres east of the main mineralized skarn zone(s) yielded 0.396 and 0.166 per cent copper with 0.115 and 0.033 per cent tungsten over 0.22 and 0.23 metre, respectively (Assessment Report 38356).

Work History

The area has been explored in conjunction with the Kuhn (MINFILE 104P 071) occurrence, 1.4 kilometres to the north-northwest, and a complete exploration history can be found there.