A small pod of very rusty-weathering massive sulphides is exposed within amphibolite of Unit EBG1. The sulphide exposure is several metres in length and up to a metre in thickness. It comprises mainly pyrrhotite and chalcopyrite, with subrounded granular quartz eyes, in a dark green chlorite-amphibole-quartz matrix. Sulphides are typically banded, commonly swirled and cut by late, thin chalcopyrite veinlets. Small euhedral pyrite grains may overgrow the massive sulphides.

Assays of two samples of the massive sulphide layer returned 0.48 and 0.23 per cent copper, with low lead and zinc content and only trace silver and gold (EM Fieldwork 1998, p. 243).