The Fern Hill (Uebell) occurrence is located on a northwest facing slope, south of the Zeballos River and between Spud and Goldvalley creeks.

The area lies within Lower Jurassic Bonanza Group volcanic rocks and sediments overlying Quatsino Formation limestone and Karmutsen Formation tholeiitic basalts both of the Upper Triassic Vancouver Group. These have been intruded by Jurassic Island Intrusions granodiorite and Eocene Catface Intrusions quartz diorite.

At the occurrence, quartz diorite breccia consisting of fragments of Bonanza Group volcanic rocks and quartz diorite are cemented together with quartz diorite. A north striking, vertically dipping calc-silicate band of the Bonanza Group forms the western intrusive contact near the area of mineralization.

Mineralization consists of chalcopyrite, pyrite and pyrrhotite concentrated in quartz-diorite breccia within 8 metres from a 8 to 15 metre wide barren quartz diorite dyke. The mineralization persists over a zone 120 metres long and 53 to 61 metres deep, as indicated by drilling.

The mineralized area, separated into the A zone and the B zone, contains drill-indicated reserves of 87,988 tonnes of 1.98 per cent copper and 58,054 tonnes of 2.02 per cent copper respectively (Northern Miner - March 29, 1962).

An 8-metre adit was drifted on a 10-centimetre quartz vein in quartz diorite, 120 metres southeast of the copper mineralization. The vein contains blebs of chalcopyrite.

In 1971, New Privateer Mines Ltd. drilled 5 holes, totalling 293 metres in an area about 120 metres south of the copper mineralization. A 2-metre intersection assayed 1.8 per cent copper and 13.7 grams per tonne silver (Siega, 1972).

In 2005, Newmex Minerals Inc. prospected the area as part of the regionally extensive Zeballos property.