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We lead the Nation’s geologic mapping and provide impartial scientific information on geologic resources and their supply chains. Our work includes leading the development of the List of Critical Minerals, assessing domestic and foreign energy and mineral resources, and mapping areas with resource potential.
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News
USGS: Lithium in Carolinas Could Replace Imports for a Century or More
USGS: Lithium in Carolinas Could Replace Imports for a Century or More
Media Alert: Low-level flights to image geology of southern Colorado
Media Alert: Low-level flights to image geology of southern Colorado
Media Alert: Low-level flights to image geology of eastern North Dakota
Media Alert: Low-level flights to image geology of eastern North Dakota
Publications
Global pegmatite-hosted lithium, cesium, and rubidium resources: A dataset for grade and tonnage modeling Global pegmatite-hosted lithium, cesium, and rubidium resources: A dataset for grade and tonnage modeling
Quantitative mineral resource assessments of potential undiscovered deposits can inform future mineral supply scenarios, but their accuracy is conditional on building robust grade and tonnage models of known deposits. This study presents an up-to-date global compilation and analysis of recently discovered and original, in-situ pegmatite-hosted Li, Cs, and Rb resources prior to historic...
Neutron scattering reveals fractionation of natural gas mixtures in unconventional petroleum reservoir pores: Perspectives on energy resource recovery and storage Neutron scattering reveals fractionation of natural gas mixtures in unconventional petroleum reservoir pores: Perspectives on energy resource recovery and storage
In unconventional petroleum reservoirs hydrocarbon fluids are hosted by both mineral and organic matter pores. These pores can have diameters that range from microns to less than a single nanometer and, for unconventional reservoirs, there is evidence that small pores (
Geochemical, mineralogical, and isotopic evidence for multi-stage genesis of the Hicks Dome REE + Y-HFSE-fluorite deposit, Illinois, USA Geochemical, mineralogical, and isotopic evidence for multi-stage genesis of the Hicks Dome REE + Y-HFSE-fluorite deposit, Illinois, USA
Hicks Dome hosts breccias enriched in rare earth elements (REE), Y, Th, F, Ba, Ti, Nb, and Be, alongside spatially associated lamprophyre dikes (ca. 271 Ma). Hicks Dome is located within the Illinois–Kentucky Fluorspar District, which hosts fluorite, Pb–Zn, and barite resources. This study investigates the genetic relationships between Hicks Dome mineralization in breccias, alkaline...