The Gordon Creek showings are located in outcrops south of Gordon Creek and to the east of the Gordon Creek Coal showing (092ISW098), however the exact locations are uncertain.
The area is underlain by Middle and Upper Cretaceous Spences Bridge Group volcanic and sedimentary sequences comprising mainly porphyritic andesites and vesicular basalts (Map 30). Early Jurassic-Late Triassic Guichon Creek batholith quartz diorites occur to the east. Some sources describe the underlying rocks as Upper Triassic Nicola Group volcanics (Assessment Report 245). Mineralization is sparse.
Four occurrences are described as: 1) a 15 centimetre wide quartz vein with chalcopyrite and malachite cutting porphyritic andesite; 2) a vein as above (1) cutting quartz diorite; 3) massive quartz diorite containing sparsely disseminated chalcopyrite; and 4) a steeply dipping fault zone striking approximately north cuts porphyritic andesite where the andesite is silicified, sheared, brecciated and mineralized with chalcopyrite, pyrite, specularite and minor cinnabar. White minerals, calcite and possibly albite, cement fragments within the fault zone. The mineralized zone is up to 60 centimetres wide and can be traced discontinuously for 60 metres.