Mud Springs District
Other Names: Medicine Springs, Dead Horse, Butte Valley
Commodities: lead, silver, zinc, gold, copper
The Mud Springs district covers the northern end of the Medicine Range, in the area between Medicine Spring and Mud Spring.
Lincoln, 1923, p. 52; Stoddard, 1932, p. 33; Gianella, 1945, p. 45; Granger and others, 1957, p. 123; Smith, 1976, p. 128; Bonham, 1976; LaPointe and others, 1991, p. 176
Muddy Mountains District
Other Names: Callville Wash, Logan, Valley of Fire, West End, White Basin, St. Thomas, Overton, Muddy
Commodities: borates, bentonite, gypsum, magnesite, sodium sulfate
The Muddy Mountains are north of the Colorado River, west of the Overton Arm of Lake Mead, and south of the Moapa district. Callville Wash, Valley of Fire, West End, and White Basin are all within the Muddy Mountains district. Averett (1962) included the magnesite deposits in Magnesite Wash, about 5 miles southwest of Overton, in an Overton district.
Copper and silver production credited to the Logan district, described as being in this area, probably originated from either the Mormon Mountains or from the nearby Gold Butte district rather than from the Muddy Mountains.
U.S. Geological Survey, 1908, p. 473; Hill, 1912, p. 202; Lincoln, 1923, p. 23; Stoddard, 1932, p. 25; Vanderburg, 1937b, p. 57; Nevada State Writers Project, 1941, p. 17; Gianella, 1945, p. 23, 28, 32; Averett, 1962, p. 64, 76; Longwell and others, 1965, p. 150-154, 157- 158; Carlson, 1974, p. 244
Muncy Creek District
Other Names: Aurum, Silver Mountain
County: White Pine
Commodities: zinc, copper, lead, silver, tungsten
Located on the east side of the Schell Creek Range at Muncy Creek. Originally known as the Silver Mountain district, Muncy Creek is the southernmost of five small districts sometimes grouped into the large Aurum district that covered all of the northern Schell Creek Range.
Hill, 1912, p. 226; Hill, 1916, p. 192; Lincoln, 1923, p. 241; Stoddard, 1932, p. 85; Hose and others, 1976, p. 44; Stager and Tingley, 1988, p. 206
Other Names: Muttleberry
Commodities: silver, lead, antimony, copper, gold, gypsum
Located in the West Humboldt Range in T26-27N, R32E.
Lincoln, 1923, p. 211; Stoddard, 1932, p. 78; Vanderburg, 1936b, p. 22; Lawrence, 1963, p. 197; Johnson, 1977, p. 74; Bonham, 1980