The old Abe Lincoln workings are hosted by the Lower Jurassic Rossland monzonite which is comprised of a biotite-hornblende-augite monzonite stock which is medium-grained, grey to green in color and hosts magnetite, apatite, some sphene with chlorite, epidote, pyrite, and pyrrhotite. The monzonite intrudes the Lower Jurassic Rossland Group (Elise Formation) sediments, volcanics and augite porphyry sill.

On the surface, the claim hosts an east-west striking vein which is comprised of auriferous pyrrhotite, chalcopyrite, and pyrite. Pyrite occurs as well formed crystals in the pyrrhotite and as disseminations in the host rock. A wide, porphyritic dyke cross- cuts the monzonite to the north and west of the workings. The Abe Lincoln mineralization is classed as typical Rossland-type.