The Boot occurrence is located just east of Angel Lake about 49 kilometres east of the community of Atlin.

The area is underlain by northeast striking cherts, argillites and minor limestone of the Mississippian to Triassic Kedahda Formation of the Cache Creek Complex. In the lower reaches of "Avalanche Creek" the cherts and argillites have been metamorphosed to brown biotite hornfels. Small intrusions, dikes and/or sills of feldspar porphyry have intruded the sediments. The largest found on the north side of the creek, is about 30 metres wide. A larger intrusion at depth is deemed responsible for the hornfelsing action.

The limestone is found as discontinuous bands within the chert and argillite that pinch out along strike. These carbonate members have been partially altered to light green to light grey lime silicate, both within and outside the hornfels. The light grey rock is predominantly tremolite and the light green rock is diopside.

These silicified limestone bands contain pockets and disseminations of minor sulphides including galena, sphalerite, and chalcopyrite. Pockets of pyrrhotite are more widespread. Within the lower part of "Avalanche Creek" a series of discontinuous lenses of massive sulphide occur within a chloritic zone in grey chert over a width of 18 metres and length of 30 metres. These are interpreted as replacements of limestone lenses and consist of mainly pyrrhotite, with some pyrite, abundant chalcopyrite and minor sphalerite and galena. Bornite, malachite, azurite and scheelite are also observed. Fluorite content is as high as 10 per cent locally and quartz is also present. The tungsten and tin content of these lenses is also high. A sample from one limestone band contained 1.560 per cent copper, 0.092 per cent lead, 0.456 per cent zinc, 0.072 per cent tungsten, 0.204 per cent tin, 0.345 per cent fluorine, and 68 grams per tonne silver (Assessment Report 6127).

Wolframite, scheelite, cassiterite and molybdenite are also reported to occur in quartz veins.

In 1967, the property was originally staked as the Boot 1-8 claims by R. Fleming. In 1969, geologists of Canadian Johns-Manville Limited became interested through prospecting and stream geochemical surveys. Canadian Johns-Manville Limited staked the properties in 1972 and 1973. In 1973, a soil sampling program was completed, and anomalous tin, tungsten and arsenic were found in some of the rock and soil pulps. In 1976, additional geochemical sampling was done and in 1980, W. McDonald and J.J. Rankin became interested in the property and in September requested J.R. Woodcock to examine the property. In August 1981, D. Gorc, H. Awmack and J.R. Woodcock returned to the property to get more information on the geology and mineralization and to take additional rock chip samples for geochemical analyses and rock specimens for alteration studies; 280 rock samples were analyzed.