At the Grizzly Heights showing, lithology is composed of well- bedded, east striking, siliceous, graphitic argillites, shales and phyllites of Upper Triassic age which are overlain by pillowed to massive basalt flows on the south facing slope between Herbert and Buckwell Glaciers. A gossan extends from Herbert Glacier, to Buckwell Glacier, 6 kilometres to the west. A 20 centimetre wide quartz vein with pyrrhotite assayed 11.79 grams per tonne gold and 14.4 grams per tonne silver. Massive pyrite and pyrrhotite boulders have been found in streams draining the hanging glaciers.

Within the sedimentary package a gold bearing breccia zone com- posed of limestone and shale fragments in a gossanous, vuggy and cal- careous matrix was also noted. The zone is 1 to 2 metres wide and traceable for 5 metres before being covered by talus. A similar breccia zone was encountered in drill core 900 metres to the south- east.