The Alma (Cannonball) occurrence is located at an elevation of approximately 800 metres on a southwest-facing slope, southeast of Baker Creek and approximately 3 kilometres north-northeast of the community of Fife on Christina Lake.
The area is underlain by limestone, greywacke and fine clastic sedimentary rocks of the Carboniferous to Permian Mount Roberts Formation that have been intruded by a complex assemblage of Middle Jurassic gabbro, diorite and granite. To the north and east, syenitic to monzonitic intrusive rocks of the Eocene Coryell Plutonic Suite are exposed.
Locally, former workings are reported to expose an oxidized ‘iron-capped’ zone hosting stringers of quartz and sulphides, comprising galena, sphalerite, arsenopyrite and pyrite.
At least five other zones of mineralization are reported in the area. These include the Iron Mountain and Crackerjack zones located on the northwest side of Baker Creek, approximately 1.2 kilometres to the north and north-northwest, respectively; the Garnet zone located approximately 1 kilometre to the northeast on the former Messenger (L.121) Crown grant; the No. 8 (Beaver Swamp) zone located north of a small lake, approximately 600 metres to the south-southeast, and the Queen-King (L.178, 177) zone located approximately 1.8 kilometres to the northwest. No description of the mineralized zones is known but they likely comprise skarn zones similar to the nearby Elmore (MINFILE 082ESE095) occurrence.
In 2013, samples (GF025) from a former trench and associated dump yielded values up to 8.76 grams per tonne gold, 17.7 grams per tonne silver, 0.964 per cent lead and 1.825 per cent zinc (Assessment Report 34437). Other samples, taken approximately 500 metres to the south and possibly from the No. 8 (Beaver Swamp) zone, yielded up to 0.1 per cent copper (Assessment Report 34437).
The Alma and Cannonball claims were Crown granted in 1900. The Cannonball (L.1036) and Alma (L.1039) Crown grants were examined in 1922, when it was stated that little had been done since 1900. Development consisted of numerous opencuts and pits near an oxidized iron-capped location along with two shafts. The first shaft was approximately 15 metres deep and followed a stringer of ore carrying galena and pyrite, whereas the other shaft, located approximately 23 metres from the first, was driven for approximately 27 metres. A drift was run from the deepest shaft for approximately 23 metres, but no ore discovery was reported.
In 1969, Boundary Exploration Ltd. completed a program of silt and soil sampling, geological mapping and an 8.0 line-kilometre ground magnetic survey on the area. In 1970 and 1971, Imperial Oil Enterprises completed programs of rock and soil sampling, geological mapping and ground magnetometer surveys on the area as the FCC group of claims.
In 2013, A.B. Firmston prospected and sampled the area as the Golden Goose and Cannonball properties.