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Found 2 dataset(s) matching "Granite placer gold mining areas".

Data release for the geologic map of the upper Arkansas River valley region, north-central Colorado
- Organization: Department of the Interior
- Updated: 20220829 | Harvested: July 18, 2025 at 05:06 AM
This 1:50,000-scale geologic map represents a compilation of the most recent geologic studies of the upper Arkansas River valley, between Leadville and Salida, Colorado. The valley is structurally...
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Geochemical reanalysis of rock and sediment samples from the Lower Middle Fork of the Salmon River collected as part of the Idaho Primitive Area Studies in the 1960’s through 1980’s
- Organization: Department of the Interior
- Updated: 20220830 | Harvested: July 16, 2025 at 11:43 AM
This is a geochemical data set from the reanalysis of 44 rock samples collected between 1966 and 1970, and 107 sediment samples collected in 1966 and 1967. These samples were collected by the U.S....
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