The Glengarry occurrence is plotted on a small ridge separating Mosquito and Krao creeks, approximately 800 metres west-northwest of the south end of Loon Lake.
Regionally, the area is underlain by hornblende schists, limestone and banded quartzite of the Upper Mississippian to Permian Milford Formation and basaltic volcanic rocks of the Carboniferous to Permian Kaslo Group. Granodioritic intrusive rocks of the Middle Jurassic Nelson Batholith are exposed to the west.
The occurrence lies in a hornblende schist and gneiss of the Carboniferous to Permian Kaslo Group and a quartz-mica schist with minor limestone unit of the Mississippian to Permian Milford Formation.
Locally, several short narrow veins in quartzite and hornblende schist contain coarse, dark-coloured sphalerite, galena, pyrite and minor chalcopyrite. One vein exposed in an opencut less than 30 metres northwest of the adit contains galena in siderite and quartz.
Work History
Workings consist of an approximately 20-metre deep caved incline shaft, constructed around 1900, and a shallow adit approximately 200 metres southeast of the shaft, made after 1917.
In 1979, David Minerals Ltd. conducted a program of geochemical (stream and silt) sampling on the area as the Peanut Butter claims of the Ainsworth property. The following year, 29 diamond drill holes, totalling 1772.4 metres, were completed on the Black Chief, Earl, Blackbird, Dictator, Glengarry, United and Last Chance claims.
In 1989, South Kootenay Goldfields Inc., on behalf of Dragoon Resources Ltd., conducted a program of prospecting, geological mapping and rock sampling on the area as the Peanut Butter property.
In 2012, David Wallach prospected and rock sampled the area as the Ainsworth property. An undescribed rock sample (1986619) from the occurrence area assayed greater than 1.00 per cent zinc and lead, each, with 66.2 grams per tonne silver (Assessment Report 33426).
In 2022, a 72.0 line-kilometre airborne (drone) magnetic survey was conducted on the area as the Ainsworth Mill property.
