The Roosevelt occurrence is located on a small creek, referred to as Camp Creek, flowing northwest into a small bay on the Nechako Reservoir, about 117 kilometres north of Bella Coola.

The area is underlain by Mt. Ney volcanic rocks of the Lower Cretaceous Skeena Group, undivided sedimentary rocks of the Middle Jurassic Smithers Formation (Hazelton Group) and calc-alkaline volcanic rocks of the Lower Jurassic Telkwa Formation (Hazelton Group). These have been intruded by intrusive rocks of the Eocene Coast Plutonic Complex(?) to the southeast.

Locally, a shear zone approximately 7.6 metres wide occurs in tuffs that Geological Survey of Canada maps show as being part of the Jurassic Hazelton Group. Quartz veining up to about 23 centimetres in width occurs within the shear zone and carries pyrite, galena, sphalerite, arsenopyrite, and chalcopyrite mineralization.

To the northeast, drilling in 1991 intersected mineralization consisting of pyrite-pyrrhotite-arsenopyrite disseminations and pyrite-galena-sphalerite-arsenopyrite as veins and veinlets, typically with quartz. Both types of mineralization are reported in all rock types with varying amounts of propylitic and silica alteration.

Opencuts located approximately 275 metres south of the portal exposed several east striking, north-dipping seams up to 0.5 metre wide comprised of galena, sphalerite and arsenopyrite with minor chalcopyrite.

In 1935, the Minister of Mines Annual Report list the Roosevelt (Chikamin Adit, Silver Tip, Monarch) occurrence as producing 2268 grams of silver, 505.8 kilograms of lead and 86.6 kilograms of zinc from 0.907 tonne of ore (Assessment Report 33439).

In 1919, a sample of mineralized dump material assayed 9.6 grams per tonne gold, 1100 grams per tonne silver and 22 per cent zinc (Assessment Report 33439).

In 1922, a 0.22-metre-wide sample from a zone of massive sulphide mineralization exposed in a crosscut assayed 4.8 grams per tonne gold, 2600 grams per tonne silver, 48 per cent lead and 12 per cent zinc (Assessment Report 33439).

In 1945, a sample taken across 0.2 metre assayed 14.3 per cent lead, 15.8 per cent zinc, 614 grams per tonne silver and 9.95 grams per tonne gold (Assessment Report 22990).

In 1991, drill core samples of mineralized vein material assayed up to 471.7 grams per tonne silver, 7.3 per cent lead, 18.2 per cent zinc and 16.5 grams per tonne gold over widths of less than 0.2 metre. Drillhole MD91DH10 intersected 1.21 metres yielding 82.1 grams per tonne silver, 2.48 per cent lead, 1.38 per cent zinc and 1.04 grams per tonne gold from a series of small veins in a shear zone (Assessment Report 22432).

In 1999, rock sampling of the adit yielded values up to 13.87 grams per tonne gold, 1530 grams per tonne silver, 1.25 per cent copper, 20.6 per cent lead and 13.9 per cent zinc (Assessment Report 26286).

In 2006, a rock sample (32591) from the “Camp” vein assayed 18.8 grams per tonne gold, 0.286 per cent copper, 0.865 per cent lead and greater than 1.0 per cent zinc and 100 grams per tonne silver (Assessment Report 28899).

In 2011, sampling of mineralized vein material assayed up to 17.3 grams per tonne gold, 1570 grams per tonne silver, 0.79 per cent copper and greater than 20.0 per cent lead and 30.0 per cent zinc (Assessment Report 33439).

During 1918 through 1945, claims were staked in the area. In 1918, a short adit (Chickamin) was driven southwesterly for approximately 11.0 metres intersecting the shear zone. The underground development follows the shear for 12.0 metres and then a 7.5-metre crosscut was driven (Duffel, Memoir 299). In 1922, the drift had been extended to a length of approximately 29 metres. In 1945, Privateer Mines drilled completed three drillholes totalling 150 metres. In 1990 and 1991, Equity Silver Mines completed programs of rock and soil sampling, geological mapping and an induced polarization (IP) survey, totalling 22.6 kilometres, on the area as the Midnight claims. This work identified an IP chargeability anomaly in the area and the same year a 12-hole diamond drill program, totalling 1365.4 metres, was completed. In 1993, Guardsmen Resources completed a 6.8 kilometre ground electromagnetic and magnetic survey on the area as the XK2620 claim. In 1999, a program of ground geophysical surveys and geochemical sampling was completed on the area as the Zincamp property. In 2006, Christopher James Gold, on the behalf of Guardsmen Resources, prospected the area as the Zinc Bay property. In 2011, Jet Gold Corp., on behalf of Guardsmen Resources, completed a program of rock sampling and airborne magnetic and electromagnetic surveys, totalling 476 kilometres on the area.