The Goodenough Porphyry showing is located 15 kilometres west- northwest of Vernon, north of Naswhito Creek.
In this area, Devonian to Triassic sedimentary and volcanic rocks of the Harper Ranch Group are unconformably overlain by Upper Triassic to Lower Jurassic Nicola Group sedimentary and volcanic rocks. These units are intruded by Middle Jurassic granitic rocks. Eocene Penticton Group volcanic rocks overlie the igneous and sedimentary rocks.
Porphyritic quartz diorite hosts copper mineralization. Minor chalcopyrite occurs in the highly pyritic, sericitized quartz diorite.
In 1969, Hudson Bay Exploration and Development conducted magnetometer and induced polarization surveys. In 1977-78, Cominco Ltd. carried out geological mapping and magnetometer and induced polarization surveys.