The Croydon North occurrence is located on East Croydon Creek above the confluence with West Croydon Creek, approximately 110 kilometres northwest of the community of Germansen Landing.

The area is underlain by the Late Triassic to Early Jurassic Aiken Lake Intrusive Complex comprising a composite body of gabbro, diorite, hornblendite, pyroxenite, orthopyroxenite, and peridotite over 20 kilometres long and 2 to 10 kilometres wide that intrudes Upper Triassic Takla Group volcanic rocks (Plughat Mountain Formation).

No information is available on the occurrence, however, Figure 6 in Assessment Report 21521 shows two rock samples taken by Cominco in 1945 to have given assays of 10.29 and 4.11 grams per tonne gold, respectively. The area appears to be underlain by gabbro to diorite intrusive rocks and the style of mineralization is inferred to be disseminated pyrite within diorite.

The area was staked by Teck Explorations Limited in late 1978 along with the Kliyul (094C 007) and Bear (094D 113) occurrences located about 1.8 kilometres south of the Croydon North showing.

In 1990, Teck Explorations Ltd. conducted an exploration program over the large Porphyry Creek property claims which covers the Croydon North showing. The program involved mapping at 1:10,000 scale, prospecting and contour soil sampling. A total of 558 rock, 2377 soil/talus fines, 22 silt, 74 moss mat, 7 pan, and 10 water samples were collected in the initial evaluation.