Felsic volcanic and intrusive rocks which occur between the Martell and Bonaparte faults, near Ashcroft, are tentatively correlated with the Permo-Triassic Kutcho Assemblage, rather than the Upper Triassic to Lower Jurassic Nicola Group. Mafic volcanic rocks assigned to the Nicola Group occur both to the east and west of the Bonaparte fault. The presence of Upper Triassic fossils imply that this correlation is valid for basaltic rocks which occur east of the Bonaparte fault. However, the age of basaltic rocks that occur west of the Bonaparte fault, in proximity to, and possibly interbedded with rhyolite tuffs, is not constrained. These basaltic rocks may be contemporaneous with Lower Triassic felsic rocks, rather than the younger Nicola Group lavas. The presence of rocks of Kutcho Assemblage age and affinity raises the potential for Kutcho Creek-equivalent Cu-Zn volcanogenic massive sulphide mineralization (Fieldwork 1996).

Red Hill, as its name implies, displays an extensive oxidation surface of flamboyant colours of red, orange and yellow gossan. On Red Hill, volcanic rocks are extensively interbedded and are metamorphosed to varying degrees. They are subdivided into four general units: felsic crystal tuffs characterized by large quartz grains; chlorite-rich mafic schist with relict phenocrysts; silicified greenstone; and altered massive chloritic basalt. The felsic tuffs are crosscut by a series of fine to coarse grained granodioritic to tonalitic plutons. Although chlorite alteration is pervasive throughout the volcanic section, significant epidote alteration, silicification and gossan are restricted to rocks near the plutons.

Most of the rocks show a cleavage which generally strikes 320 to 340 degrees and dips 50 to 70 degrees southwest. Contacts between the different units are parallel or subparallel to the cleavage, so it is assumed that the cleavage surface gives an estimate of the bedding surface. If this is the case, then the package of rocks forms a large upturned block dipping to the southwest.

The Red Hill showing is exposed in an old pit near the summit of Red Hill. Chalcopyrite and chalcocite occur with pyrite and quartz in veins which strike 060 degrees and are exposed for about 15 metres. The veins are in pyritic greenstone that has been subjected to intense epidote, chlorite and sericite alteration and bleaching in proximity to Lower Triassic rhyolite tuffs and tonalite. Secondary copper minerals, predominantly malachite and azurite, are widespread in the greenstone. At the base of the west side of Red Hill, about 550 metres south of the pit, there is a minor showing of malachite and azurite in a gossan zone. In general, however, the gossan zones are devoid of copper mineralization at the surface. In 1998, Teck Exploration drilled five holes on the property, four of which were southwest of Highway 1 where some holes intersected pyrite beds and veinlets in chlorite and epidote altered rocks. Copper mineralization is also exposed on the west side of Highway 1 about 2.5 kilometres south of the pit on Red Hill (see Silica, 092INW057).

In 1962, Noranda Exploration Company, Limited optioned a group of mineral claims on the northern part of Red Hill from the owner, H. Reynolds of Lillooet. Work included electromagnetic surveying, soil sampling, magnetometer surveying, stripping and surface diamond drilling of six or more holes. In 1966, work completed on behalf of Delkirk Mining Ltd. consisted of about 365 metres of bulldozer trenching and 91 metres of x-ray diamond drilling. In 1968, geological mapping and four rotary holes totalling 806 metres were drilled on the property on behalf of Delkirk Mining Ltd. and H. Reynolds. In 1970, geological mapping, magnetometer surveying and percussion drilling of twelve holes totalling 960 metres were completed by the operators Cerro Mining Company of Canada Limited and Ducanex Resources Limited. In 1971, an induced polarization survey was completed over 17 line kilometres and diamond drilling of four holes totalling 599 metres by the operators Cerro Mining Company of Canada Limited and Ducanex Resources Limited. In 1974, geological mapping, soil and rock sampling and percussion drilling of three holes totalling 176 metres was completed on behalf of Bethlehem Copper Corporation. In 1979, trenching and percussion drilling of eight holes totalling 100 metres was conducted on the Moly claims, across the highway from Red Hill, for the owner, L.W. Reaugh. In 1980, a geological mapping and geochemical sampling program was carried out on behalf of Guichon Explorco Limited on the Silica claims which adjoin and surround the Moly claim covering the Red Hill showing. Percussion drilling of six holes totalling 457 metres was conducted on the Silica claims in 1981 on behalf of Guichon Explorco Limited. In 1981, magnetometer surveys and a geochemical survey were carried out on the Moly and Add claims on behalf of Rea Petro Corp. In 1982-83, electromagnetic, induced polarization and magnetic surveys, topographic survey, rock sampling and diamond drilling eight holes totalling 1148 metres was carried out on the Silica claims on behalf of Selco Inc., A Division of BP Exploration Canada Limited. In 1985, diamond drilling six holes totalling 765 metres was completed on the Red Hill property on behalf of Rea Gold Corporation. During 1987-88, nine rotary percussion drill-holes totalling 1835 metres tested the Red Hill property for Rea Gold Corporation. A soil and lithogeochemical survey was completed on the Silica property in 1993 on behalf of D. de la Mothe. In 1998, Teck Exploration drilled 5 holes totalling about 750 metres.