The Alameda Mine is a gold and silver mine located in Madison county, Montana at an elevation of 6,401 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. 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.
Mine Info
Elevation: 6,401 Feet (1,951 Meters)
Commodity: Gold, Silver
Lat, Long: 45.28111, -111.95833
Map: View on Google Maps
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Mine Description
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
Alameda Mine MRDS details
Site Name
Primary: Alameda Mine
Commodity
Primary: Gold
Primary: Silver
Location
State: Montana
County: Madison
District: Virginia City
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: D. Harris,
Years: 1937 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Tobacco Root Mountains
Mineral Deposit Model
Not available
Orebody
Form: TABULAR
Structure
Not available
Alterations
Not available
Rocks
Name: Gneiss
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Analytical Data: AU-33.9 OZ/T. (1906-1915)
Analytical Data: AVERAGE ASSAY OF 41 SHIPMENTS WAS: AU-1.64 OZ/T
Materials
Not available
Comments
Comment (Location): LOCATED ON INTERMITANT TRIBUTARY, EQUIDISDANT BETWEEN BROWN'S GULCH AND ALDER GULCH, 2 MILES SOUTH OF THEIR CONFLUENCE.
Comment (Production): 41 SMALL SHIPMENTS OF ORE WERE PRODUCED BETWEEN 1906 AND 1915.
Comment (Workings): ADIT, DRIFTS AND A SHAFT.
References
Reference (Deposit): LORAIN, S, 1937, GOLD LODE MINING IN THE TOBACCO ROOT MTNS, MADISON CO., MONT., USBM. INF. CIRC. 6972, P. 52.
Reference (Deposit): TANSLEY, SCHAFER AND HART, 1933, GEOLOGICAL RECONNAISSANCE OF THE TOBACCO ROOT MTNS, MADISON CO, MONT, M.B.M.G. MEM. 9., P. 47, 48.
Reference (Deposit): 1933 RECON MBMG. MEM 9
Reference (Deposit): 1937 COMPILE USBM, INF. CIRC. 6972
Principal Gold Districts of Montana
In Montana, 54 mining districts have each have produced more than 10,000 ounces of gold. The largest producers are Butte, Helena, Marysville, and Virginia City, each having produced more than one million ounces. Twenty seven other districts are each credited with between 100,000 and one million ounces of gold production. Read more: Principal Gold Districts of Montana.
