The Eden deposit is located 2 kilometres west of the centre of Upper Dam Lake (Anyox Creek), and 7 kilometres northeast of the Anyox smelter (103P 021). The Eden area was explored for copper in the early 1950s.

The region is underlain by a roof pendant, consisting of volcanic and sedimentary rocks, within the Eocene Coast Plutonic Complex. Recent geochronology and fossil research by the Geological Survey of Canada have helped define the age of the pendant. These pendant rocks have been correlated with Middle-Upper Jurassic Hazelton Group rocks and overlying upper Middle to Upper Jurassic Bowser Lake Group sedimentary rocks (Geological Survey of Canada Open File 3453). The Hazelton rocks consist of variably chloritized pillowed and massive basalt with minor mafic tuffs. The overlying Bowser Lake sediments consist of siltstone and sandstone with minor chert and limestone. There are two observable phases of folding in the area, an initial north-northeast trending phase followed by a later east-northeast trending phase.

The Eden deposit occurs as two parallel sulphide-bearing quartz veins which occur within two major parallel shear zones which cut pillowed basalt. On average, the shears strike 005 degrees and dip 45 degrees west. Many minor quartz veinlets are buckled and disrupted by the shear zones. Pyrite, pyrrhotite and chalcopyrite with minor sphalerite occur as massive sulphides in thick laminae within the sheared rock.

The floor of the nearby creek to the west exposes a 6 metre thick dike of massive unsheared fine-grained diorite. This dike is intruded along the mineralized shear. It could post-date mineralization or it may be the cause of the sulphide and silica mineralization.

The Eden deposit, discovered by prospecting in 1952, was tested by 1277 metres of drilling in 1954. The two distinct subparallel zones, 15 metres apart, contain a drill indicated resource of 158,757 tonnes grading 1.3 per cent copper and 1.9 per cent zinc. The lower (southwestern) quartz vein (also known as the Lower Lens or South Eden zone) is 1.5 metres thick and contains 122,470 tonnes of 1.3 per cent copper and 1.3 per cent zinc; the upper (northeastern) quartz vein (also known as the Upper Lens or North Eden zone) is 0.5 metre thick and contains 36,287 tonnes of 1.9 per cent copper and 2.9 per cent zinc (Report by Taiga Consultants Ltd., 1992). This report and Assessment Report 23528 has a good summary and history of exploration in the Anyox area.

A sample collected from existing prospecting pits on the Eden showings yielded 2.95 per cent copper, 6.5 per cent zinc, 13 grams per tonne silver, 11 parts per million lead, 15 parts per billion gold and 132 parts per million cobalt (D.J. Alldrick, B.C. Geological Survey, unpublished data, 1998).