The Montana claim (Lot 10778) is located at an elevation of 2075 metres across the southeast ridge of John Bull Mountain, at the head of Bluebird Creek. It is about 2 kilometres southeast of the Bayonne mine (082FSE030) and 2 kilometres southwest of the Summit Bell (082FSE034) occurrence.

The Montana claim was owned from about 1902 by P. Casey and F. Aikens. Work was done in open cuts and a shallow shaft. The claim was at times grouped with the Summit Bell property held by the same owners. The Montana claim was Crown-granted to Casey and Aikens in 1917. In 1937 the claim was held by the Estate of P. Casey, of Spokane.

Bayonne Consolidated Mines, Ltd. optioned the claim in 1939. Following some development work the option was given in 1941.

The claim lies within the Mine stock, part of the Nelson intrusions of Middle Jurassic age, near the contact with a small inlier of quartzite, assumed to be part of the Monk Formation (Horsethief Creek Group of Upper Proterozoic age) that is the nearest metasedimentary rock. Metamorphic grade in the granodiorite pluton is upper amphibolite. The showing consists of a quartz vein, up to 1 metre thick, striking 280 degrees and dipping 58 degrees southerly. Surface workings expose the vein over a strike length of 150 metres; selected ore from a dump assayed 3.4 grams per tonne gold, 150 grams per tonne silver and 24.5 per cent lead; other samples contain up to 1.4 per cent zinc (Minister of Mines Annual Report 1937, part E, page 45, Special Report by H. Sargent). The vein is sparsely mineralized with galena and pyrite; microscopically, galena and sphalerite occur in large irregular masses and contain minor pyrite, rare minute blebs of chalcopyrite and tetrahedrite. Copper stain (malachite) is evident in places. The quartz vein has been traced from sheared granodiorite into the quartzite.

Geophysical surveying (very low frequency electromagnetic) conducted in 1990 by Goldrich Resources Inc. did not reveal any conductors considered worthy of follow-up (Assessment Report 20198).