The small Duck's Face gypsum occurrence is located in the vicin- ity of "Duck's Face", a geographical feature near the East Arm Glacier. The area stratigraphy consists of a Triassic and older volcanic-sedimentary sequence. The principle volcanic rock types are dark greenish-grey basalt to andesite pillow lavas and flows. Prin- ciple interbedded rocks are limestone, argillite, and siltstone. There is also rare gypsum.

There is no written information on the extent of gypsum, or de- tailed lithology, at this location.