The Spin showing is located in trench 2 of 5 on the western slopes of Botanie Mountain, 15.8 kilometres northwest of Lytton and 3.6 kilometres east of the Fraser River.

The area is underlain by Triassic Mount Lytton Complex intrusives. These rocks include layered sequences of anorthosite, granodiorite and gabbro; also amphibolite, mylonite and younger quartz diorite intrusions and andesite dykes.

Minor disseminated chalcopyrite, bornite and possible trace tetrahedrite occur in and close to fractures in altered diorite. The diorite is cut by andesite and rhyolite dikes. Malachite and azurite staining is common. Specks of chalcopyrite associated with disseminated pyrite and malachite staining also occur in quartz veins up to 8 centimetres wide in altered diorite. Diorite is locally oxidized and bleached.

In 1972, Canadian Johns-Manville Company completed a program of soil sampling and geological mapping. This work identified a copper soil geochemical anomaly with values greater than 1000 parts per million and up to 7750 parts per million copper (Assessment Report 30100). In 2005 and 2007, the area was explored as part of the Pharoh and Spences Brigde projects.