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Geochemistry of placer gold, Koyukuk-Chandalar mining district, Alaska

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Analytical results, geochemical signatures, mineralogical data, and sample locality map of placer gold, and heavy-mineral concentrates from the Circle mining district, Circle quadrangle, Alaska

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Rare-earth mineral deposits of the Mountain Pass District, San Bernardino County, California, with a foreword on history of the discovery at Mountain Pass, California

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Analytical results, geochemical signatures, mineralogical data, and sample locality map of lode gold, placer gold, and heavy-mineral concentrates from the Tolovana mining district, Livengood Quadrangle, Alaska

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Economic geology of the Central City district, Gilpin County, Colorado

Data Release
Collage of images of an earthquake, scientists in flood with instruments, a volcano erupting, and seismic illustration.

Trace element composition and molecular-scale speciation characterization of sphalerite from Central and East Tennessee mining districts, Red Dog mining district (AK), and Metaline mining district (WA)

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Preliminary geologic interpretation of aeromagnetic data in the Yakutat district, Alaska

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Structure of the Red Dog District, western Brooks Range, Alaska

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Geology of the Comstock lode and the Washoe district, with atlas

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Mining in the Chitina district. Mining and prospecting on Prince William Sound in 1909. Preliminary report on the mineral resources of the southern part of Kenai Peninsula

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The Goldfield mining district, Nevada: an acid sulfate bonanza gold deposit

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Zoning of ore deposits in and adjoining the Leadville District, Colorado

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Geochemical signatures, analytical results, mineralogical data, and sample locality map of placer and lode gold, and heavy-mineral concentrates from the Fortymile mining district, Eagle quadrangle, Alaska

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Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Fairbanks Quadrangle, Alaska

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Resistivity imaging over porphyry copper systems in the Red Mountain district, southwest Colorado, USA

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Heavy minerals in stream sands of the southern Hazara District, Pakistan

Data Release
Collage of images of an earthquake, scientists in flood with instruments, a volcano erupting, and seismic illustration.

Geochemical data for alkaline igneous rock units in the Cripple Creek district, Colorado USA: 1989-2016

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Mineral resource potential and geology of the White River National Forest and the Dillon Ranger District of the Arapaho National Forest, Colorado, with a section on salable commodities

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Mineral resource of the month: dimension stone

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Zimbabweite, a new alkali-lead arsenic tantalate from St Anns mine, Karoi district, Zimbabwe

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Geochemistry and mineralogy of the carbonates of the Creede mining district, Colorado

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Geochemistry of selected mercury mine-tailings in the Parkfield Mercury District, California

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Mineral resource potential and geology of the Routt National Forest and the Middle Park Ranger District of the Arapaho National Forest, Colorado, with a section on salable minerals

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Geology of the Ralston Buttes district, Jefferson County, Colorado: a preliminary report

Data Release
Collage of images of an earthquake, scientists in flood with instruments, a volcano erupting, and seismic illustration.

Survey of metals in soils and associated endemic plants across the historic Harshaw Mining District, Southern Arizona

Data Release
Collage of images of an earthquake, scientists in flood with instruments, a volcano erupting, and seismic illustration.

Sulfur isotope analyses of mineral deposits: sulfide minerals in epithermal veins of the Lowland mining district, Montana, USA and anhydrite associated with the Black Angel zinc-lead-silver deposit, Greenland

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Fluid-inclusion studies of the fluorspar and gold deposits, Jamestown district, Colorado

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Strontium isotopic systematics of mineralized and background water samples, Montezuma Mining District, Colorado

Data Release
Collage of images of an earthquake, scientists in flood with instruments, a volcano erupting, and seismic illustration.

Electron microprobe analyses of sphalerite and hemimorphite from mine wastes from the Tar Creek Superfund Site, Tri-State Mining District, Oklahoma, U.S.A.

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Stratigraphy of Slick Rock district and vicinity, San Miguel and Dolores Counties, Colorado

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