The Lone Mountain district is located east of the Missouri River between Toston and Townsend on the western slope of the Big Belt Mountains. A few lode mines shipped ore with values in gold, silver and copper, but district production generally has been unimportant, and none was reported after 1916. Forming the northern border of the AMRB (1994) district is Deep Creek, a tributary of the Missouri. Miners worked placer claims intermittently along the creek during the late Nineteenth and early Twentieth centuries. The production was only minor amounting to tens of ounces annually. The Deep Creek area last recorded production in 1913 and 1914 (Lyden 1948; Sahinen 1935).
BOUNDARIES OF THE DISTRICT
Sahinen (1935), the only source on the Lone Mountain district, gives no district boundaries. The placer mining activity along the Deep Creek drainage was in the higher elevations, around the junction of Cedar Bar Creek (Sahinen 1935; Lyden 1948). Figure 1 shows the Lone Mountain district as defined by the AMRB (1994).
HISTORIES OF SELECTED MINES
There is no information available on individual mines in the Lone Mountain district or the Deep Creek placer mines.
Abandoned Mine Reclamation Bureau (AMRB)
1994 Mining districts of Montana. Maps 1:100,000 and Map #94-NRIS-129. Compiled and edited by Joel Chavez. Prepared by Montana State Library Natural Resource Information System (NRIS) for Montana Department of State Lands. Helena
Greiser, Sally T., Heidi A. Plochman, T. Weber Greiser, Daniel F. Gallacher, Robert J. Ottersberg, and Donald L. Smith.
Class III Cultural and Paleontological Resource Inventory at Canyon Ferry Reservoir, Near Helena, Montana
. Prepared for the U.S. Department of the Interior, Bureau of Reclamation, Billings, Montana, by Historical Research Associates, Missoula.
Lyden, Charles J.
The Gold Placers of Montana
. Memoir No. 26. Montana School of Mines, Butte.
Munson, Gene and Shirley M. Munson
1980 "Cultural Resource Inventory and Assessment: Montana Power Company 500 kV Powerline from Broadview to Townsend", prepared for Montana Power Company by Cultural Resources Division Mineral Research Center, Montana Tech Alumni Foundation, Butte.
Sahinen, Uuno Mathias
Mining Districts of Montana
. Unpublished Master's thesis, Department of Geology, Montana School of Mines, Butte.