The Ralphus showing area is underlain by Upper Triassic Stuhini Group volcanic, volcaniclastic and sedimentary rocks intruded by a Late Triassic diorite phase of the Stikine (or McQuillan) Plutonic Suite.

Prospecting in 1990 by South Unuk Gold Corp resulted in the discovery of an occurrence of banded pyrrhotite plus/minus pyrite plus/minus chalcopyrite. The showing occurs near a volcanic-sedimentary contact of medium to dark grey plagioclase pheric andesite tuff and moderately foliated, greenish-grey siltstone. The contact consists of a fault clay-crush zone material with mineralization hosted within. Correlation of this showing to the Chris and Anne showings (MINFILE 104B 125) is reported to be supported by the style and location of this mineralization. Sample 29028 assayed 0.11 gram per tonne gold, 0.1 gram per tonne silver, 0.046 per cent copper (Assessment Report 21332).

Refer to Chris (MINFILE 104B 125) for details of a common work history.