The King occurrence is located at an elevation of approximately 450 metres in a steep canyon of an un-named creek flowing southwest into the Nomash River, approximately 1.3 kilometres southeast of its junction with the Zeballos River.
Regionally, the area is underlain by limestone and calcareous sedimentary rocks of the Quatsino Formation and basaltic volcanic rocks of the Karmutsen Formation, both of the Upper Triassic Vancouver Group. To the southwest, these have been intruded by granodioritic rocks of the Jurassic Island Plutonic Suite and quartz dioritic rocks of the Eocene to Oligocene Mount Washington Plutonic Suite.
Locally, heavy irregular patches and fracture zones contain chalcopyrite, pyrite, magnetite, pyrrhotite, garnet, epidote, quartz and calcite. The lenses or patches extend up to 1.5 metres wide in zones of fracturing up to 6.0 metres wide. The mineralization occurs at the contact between impure grey limestone and green calcareous tuff that is interbedded with andesitic, basaltic and amygdaloidal flows and breccia of the Karmutsen Formation. Limestone of the Quatsino Formation conformably overlies the Karmutsen Formation 60 metres stratigraphically above the occurrence. The rocks have a general strike of 305 degrees and dip 55 degrees southwest; several northeast-trending porphyritic granodiorite dikes are present.
A similar occurrence, reported further uphill at an elevation of 762 metres, may or may not be the same zone (Assessment Report 868, page 8).
Another zone of mineralization, consisting of a 0.3 to 1.2-metre wide, steeply dipping and near vertical quartz-sulphide vein with a strike of approximately north 60 degrees east, is reported between elevations of 1020 and 1200 metres near the head of the creek canyon.
In 1932, a sample is reported to have assayed 5.14 per cent copper, 2.7 grams per tonne gold and 31.5 grams per tonne silver (Geological Survey of Canada Summary Report 1932, Part A II, page 44).
In 1963, two select samples (2492 and 2493) assayed 1.0 and 6.8 grams per tonne gold and 75.2 and 99.2 grams per tonne silver with 3.35 and 9.80 per cent copper, respectively (Property File - H. Veerman (1963-08-02): Property Evaluation - Rugged Mountain Copper).
In 1995, a rock sample (599529) of oxidized and malachite-stained basalt assayed 0.36 gram per tonne gold, 2.9 grams per tonne silver and 0.135 per cent copper (Assessment Report 24184).
In 1963, Noranda Exploration Co. Ltd. examined and sampled the area. In 1966, Malaspina Mining Co. Ltd. completed a program of soil sampling, geological mapping and a 6.6 line-kilometre ground magnetic survey on the area as the Rugged Group. In 1989, Golden Quadrant Resources completed 12.8 line-kilometres of ground electromagnetic and magnetic surveys on the area as the Nomash Silver claim.
In 1994 and 1995, Orvana Minerals Corp. completed a program of rock and silt sampling and geological mapping on the area as the Nomash property. In 2009, Global Silver Producers Ltd. and A25 Gold Producers Corp. prospected the area. No workings or mineralization were identified during this time. In 2017, Pacific West Stone Inc. completed a program of prospecting, geological mapping and rock sampling on the area.
