At the Herbert West showing on Herbert Glacier, a near-vertical zone of gossanous acidic to intermediate volcaniclastics is contained within pillow basalts of Upper Triassic age. The zone contains pods of disseminated and locally massive pyrite. A grab sample of py- ritic, siliceous sediment assayed 15.98 grams per tonne gold, 10.98 grams per tonne silver, 0.052 per cent copper, 0.129 per cent cobalt, and 0.011 per cent lead (Assessment Report 12629).