Alameda MineAll mine locations were obtained from the USGS place names database. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property. |
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State: Montana
County: Madison
Elevation: 6,322 feet
Latitude: 45.2815920
Longitude: -111.9585912
Type: Gold, Silver
Also known as the Jewell House mine. Vein strikes N 70° E, 50° N, 0.5 to 5 ft thick, typically 1 to 1.5 ft thick. Average assay 0.021 to 0.067 opt (Troy ounces per ton of ore) Au, 2.05 to 5.7 opt Ag. Some assays of sorted ore ran as high as 1.64 opt Au, 33.9 opt Ag. From 1883 to 1887, the mine included a 768-ft adit on the vein, and a 300-ft vertical shaft with drifts at 40, 90, 150, 220, and 270 ft; there was no stoping below the 270-ft level, and no deeper exploration. In 1887, the mine was operated by the New York and Montana Company, and the shaft was being deepened. The ore body was stoped out above the 300 level. In 1907, the mine was owned by the Westinghouse Mining Company, and leased to J.H. Pankey and C.D. Groves. It was operated in 1907,1917, and 1923 and 1924. In 1935 and 1936, it was leased to A.L. Harris, and the shaft was deepened to 370 ft. In 1937, some ore from the margins of the old stopes was shipped; the mine was flooded to the 40-ft level. In 1939, the mine yielded 33 tons of ore containing 189 oz of gold and 1885 oz of silver. In 1957, it produced 54 tons of ore containing 44.5 oz of gold and 412 oz of silver. There was some development and exploration in 1969, 1974, 1979, 1981, and 1982. Estimated total production: $500,000. In 2000, the mine was inactive.
Source: The Gold Mines of the Virginia City Mining District, Madison County, Montana. Montana Bureau of Mines and Geology. Bulletin 133, 2004
