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Explore Search: Arizona;Colorado;Nevada

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Correlation of basal Permian and older rocks in southwestern Colorado, northwestern New Mexico, northeastern Arizona, and southeastern Utah

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Maudina and Morning Star tungsten mines, Pinal County, Arizona

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Manganese Deposits in the Artillery Mountains Region, Mohave County, Arizona

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Dawley Canyon beryl-pegmatite area, Elko County, Nevada

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Beryl-bearing pegmatite, Larimer County, Colorado

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Lithium-tantalum pegmatites, Gunnison County, Colorado

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Lead and zinc deposits at Rico, Colorado

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Star tungsten mine and vicinity, Harrison Pass, Elko County, Nevada

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Tungsten deposits in the Boriana district and the Aquarius Range, Mohave County, Arizona

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Tungsten Deposits in the Minerva District, White Pine County, Nevada

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Geologic map of the Kokomo mining district, Colorado

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Fluorspar deposits of the Jamestown district, Boulder County, Colorado

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Molybdenum and tungsten deposits near Gold Hill, Gunnison County, Colorado

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Report on geologic reconnaissance of the Arden area near Las Vegas, Clark County, Nevada

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Geologic map of the vanadium region of southwestern Colorado and southeastern Utah

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Suggestions for prospecting in the Silver Plume district, Clear Creek County, Colorado

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Surface water supply of the United States, 1943, Part IX, Colorado River basin

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Preliminary report on the geology and ore deposits of the Minturn quadrangle, Colorado

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Summary of records of surface waters at base stations in Colorado River Basin, 1891-1938

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Collage of USGS Maps.

Structure contour map of the exposed rocks in the Rangely anticline, Rio Blanco and Moffat Counties, Colorado

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Preliminary report on a trace elements reconnaissance in western states

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