The Parallel Creek occurrence is located near Parallel Creek in the Cassiar Mountains, about 104 kilometres north of the community of Dease Lake.

North to northeast dipping limestone beds of the Upper Paleozoic Lower Dorsey Complex are intruded and skarnified by Late Cretaceous quartz monzonitic rocks of the Parallel Creek batholith. Skarn containing garnet, vesuvianite, diopside and calcite is sparsely mineralized with disseminated galena and sphalerite. Several hundred parts per million (ppm) tin occurs in various skarns in the area (probably in garnet or clinopyroxene?).

In 1978-79, Du Pont of Canada Exploration Limited conducted geological mapping and soil sampling (253) on their AP property claims.The AP claims cover an old showing marked as "occurrence" on the 104-O Mineral Deposit - Land Use map. No old posts were seen during traverses but indications of hand blasting were noticed in the central portions of this group. The A claims were staked to cover anomalous tungsten (10 ppm in 80 mesh; Open File 561) in the creek draining the large cirque lake.The G claims were staked for protection and cover the gap formed between the A and AP groups.