The Blinke occurrence is located at 1250 metres elevation above sea level near the head of Poplar Creek, 3.5 kilometres southeast of Spyglass Mountain in the Slocan Mining Division.

Regionally, the area lies within the Selkirk Mountains of southeastern British Columbia. The occurrence is within the Kootenay Arc, a curving belt of highly deformed metasedimentary and metavolcanic rocks which includes the Upper Proterozoic Horsethief Creek Group, the Upper Proterozoic to Lower Cambrian Hamill Group, the Lower Cambrian Badshot Formation, and the Paleozoic Lardeau and Milford groups. The volcano-sedimentary sequence is intruded by numerous Paleozoic to Mesozoic granitoid plutons.

The Spyglass Mountain area is mainly underlain by grey phyllitic rocks, marble and coarse volcaniclastic rocks of the Milford Group. The layered sequence is tightly folded in a series of northwest-trending folds which are cut to the north and south by the Mesozoic North Fork and Poplar Creek quartz monzonite stocks. The rocks have undergone contact and regional metamorphism to middle or upper greenschist facies (Geological Survey of Canada Bulletin 193).

Galena, sphalerite, pyrite and chalcopyrite occur in a quartz vein within a marble unit of the Milford Group which is in contact with a granitic intrusion. The granitic body is probably part of the Mesozoic Poplar Creek quartz monzonite stock. The sulphide minerals also occur as disseminations within the intrusion for a distance of 15 metres from the contact with the marble (Geological Survey of Canada Memoir 161).