The Humdinger and Hunkadora showings are located in the low pass connecting Cultus and Next creeks, at an elevation of about 1450 metres. The recorded location is only one of several occurrences along a strike length of 1 kilometre in a mainly overburden-covered area. It is along the trend of mineralization referred to in the Cultus Creek (082FSE056) showing, and may be along strike of the Iva Fern (082FSE037) showings of similar character to the north. It is possible that the Peanut showing (082FSE081), which is reported to be hosted in granite, lies farther to the west than shown on the map.
Mineralization is described as chalcopyrite disseminated through a siliceous and calcareous gangue, uniformly distributed over about 2 metres width; the lateral limits to the mineralization were not exposed. Other occurrences of similar mineralization are in float boulders along the strike between the Humdinger and Cultus Creek showings. A grab sample in 1927 from the dump assayed 4.58 per cent copper, 82 grams per tonne silver and 2 grams per tonne gold, the balance being 60.6 percent silica and minor lime and alumina (Minister of Mines Annual Report 1927, page 326). More recent work by Minequest Exploration Associates Ltd. in 1981 confirmed minor copper and silver values up to 1.2 per cent and 29 grams per tonne respectively, with trace gold at 0.1 gram per tonne. This work extended the zone of interest with induced polarization and geochemical anomalies. Significantly, this work suggested that a stratabound horizon containing the mineralization might extend from the Iva Fern showing 5 kilometres to the north to as far south as the Canada Belle (082FSE054), a distance of roughly 30 kilometres.
Originally described as siliceous limestone, the hostrocks are characterized by Assessment Report 10484 as silicified dolostone, part of one or two carbonate units occurring with schistose andesitic tuffs, siltstone and overlying phyllitic slate in the Irene Volcanic unit of the Horsethief Creek Group, part of the Windermere Supergroup of Upper Proterozoic age. These units strike 340 degrees, parallel to the trend of the mineralization, with a steep westerly dip. The dolostone units are up to 600 metres thick, and locally contain as much as 10 per cent pyrite and chalcopyrite.