Gold production (from 1876 to 1940) totalling 22,484 grams is recorded for Mosquito Creek, which flows into Thibert Creek, located about 14 kilometres west of the north end of Dease Lake.

The creek drains an area underlain by greywacke, slate and chert of the Mississippian-Triassic Kedahda Formation (Cache Creek Complex). The lower part of the creek, for about 304 metres up from its mouth, is a narrow rock canyon in which the alluvium is a metre deep, but very bouldery. Above the canyon, the valley widens and has an alluvial flat averaging about 45 metres in width. Tunnels driven upstream from the canyon for over 182 metres failed to reach bedrock because of the bouldery nature of the ground and the lack of drainage for the deepest part of the channel.

Considerable work has been done on the creek and included tunnels (inclined), boreholes and hydraulicking.