Geologic map of Lake Valley manganese district, Sierra County, New Mexico
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Abstract
The Lake Valley district was originally developed as a manganese-silver district, but the known silver-bearing ore bodies have long since been worked out. The critical shortage of manganese during World War II renewed interest in the manganese deposits; from October 1941 through June 1942 the U. S. Geological Survey and the U.S. Bureau of Mines conducted a cooperative exploration program in the district. This exploration demonstrated that the Lake Valley district contained about 175,000 tons of ore; approximately 37,000 tons has subsequently been mined. The present reserves are estimated to be approximately 140,000 tones of ore with a manganese content of more than 10 percent and an average content of 16.4 percent; about 75,000 tons of the ore has manganese content of more than 15 percent and an average content of 20.7 percent.
Suggested Citation
Creasey, S., Granger, A., 1953, Geologic map of Lake Valley manganese district, Sierra County, New Mexico: U.S. Geological Survey Miscellaneous Field Studies Map 9, 45.65 x 30.73 inches, https://doi.org/10.3133/mf9.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Geologic map of Lake Valley manganese district, Sierra County, New Mexico |
| Series title | Miscellaneous Field Studies Map |
| Series number | 9 |
| DOI | 10.3133/mf9 |
| Year Published | 1953 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | 45.65 x 30.73 inches |
| Country | United States |
| State | New Mexico |
| County | Sierra County |
| Scale | 2400 |