The Beach occurrence is located near shore on the south western side of Zeballos Inlet, approximately 4.5 kilometres south of the community of Zeballos.
The area is underlain by Lower Jurassic Bonanza Group andesitic lavas and related volcaniclastic rocks. Several small stocks of granodiorite, related to the Jurassic Island Plutonic Suite, are indicated on Geological Survey of Canada Ma 1537A.
Locally, gold bearing, heavily mineralized quartz veins are reported to be hosted by Bonanza volcanics.