The area of the Cone 1 showing is underlain by Pennsylvanian volcanic rocks of the Stikine Assemblage near the contact with Late Early Jurassic granodioritic stock of the Cone Mountain Plutonic Suite.

Andesite flows are strongly foliated and pervasively chlorite altered. Disseminated pyrite, with lesser amounts of chalcopyrite, appears to be concentrated along fracture surfaces in areas of fractured and chlorite altered andesite. Skarn minerals such as garnets and actinolite have been observed in samples collected from the limestone unit. Alteration within the granodiorite is limited to small epidote stringers occurring along fracture surfaces but alteration is not pervasive to the rock matrix. Mineralization within the granodiorite consists of fine disseminations and small cubes of pyrite and trace amounts of visible chalcopyrite. Shear and fracture hosted quartz veins consist of milky white bull quartz and when mineralized contain clots of massive pyrite with small amounts of chalcopyrite.

In 1990, Bellex Mining Corp collected rock grab samples from areas of alteration, shearing and rocks containing sulphide mineralization. A total of 7 rock samples and 1 silt sample were collected. Rock sample 90G-11A-X07 of a graphitic metasediment assayed 0.033 per cent copper, 0.013 per cent zinc and 2.5 grams per tonne silver (Assessment Report 21163).