The Donald workings are located on the east slope of Fidelity Peak about 1 kilometre west of Bostock Creek, in Glacier National Park, 2.5 kilometres north-northwest of Flat Creek Station of the Canadian Pacific Railway, about 54 kilometres west of Golden.

The original claim on the property was staked in the late 1880s and the first recorded work was performed in 1896 with sporadic development until 1929. Workings consist of a shaft, a short adit and several opencuts on the Round Hill claim (Lot 201, survey cancelled); and two other shallow shafts, numerous opencuts and a 274-metre long crosscut adit.

The property is underlain by a small Middle and/or Late Jurassic stock of porphyritic granodiorite which intrudes a series of Lower Paleozoic quartzites, mica schists, phyllites and slates that strike from northwest to north and dip steeply east or west. Hornblende granite and granite aplite dikes are also evident. Mineralization occurs in three major, and several minor quartz-siderite-ankerite veins which cut the granodiorite. Sulphides consisting of pyrite, pyrrhotite, sphalerite, galena and chalcopyrite occur as irregular bodies (up to 3.3 metres) or stringers, in and alongside the quartz veins. Near some of the veins, wallrocks are extensively bleached and sericitized.

The most important vein is the westerly one and has been developed by two shafts, three or four opencuts and a short drift. The vein is 0.9 to 3 metres wide, strikes northerly and dips irregularly but generally steeply west.

In 1929, a quartz vein was exposed about 30 metres southeast of the most northerly shaft that explores the main vein. The vein is 7.3 metres wide and is mineralized with pyrrhotite, pyrite, galena, sphalerite and very minor chalcopyrite. A sample across the vein analysed 0.68 gram per tonne gold, 113.1 grams per tonne silver, 4 per cent lead and 1.5 per cent zinc (Minister of Mines Annual 1929, page C333).