Alameda Mine

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

Name: Alameda Mine  

State:  Montana

County:  Madison

Elevation: 6,401 Feet (1,951 Meters)

Commodity: Gold, Silver

Lat, Long: 45.28111, -111.95833

Map: View on Google Maps

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.


Satelite image of the Alameda Mine

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

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.