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Geochemistry

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Persistent Science Challenges in Legacy Mine Land Site Management

The objective of this project is to provide targeted research results to benefit cooperators managing legacy mine land sites in the western U.S. by addressing three persistent scientific challenges: (1) determining the contribution of mining-related metal sources to water quality degradation when substantial natural background metal sources are also present; (2) adequately characterizing key...
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Persistent Science Challenges in Legacy Mine Land Site Management

The objective of this project is to provide targeted research results to benefit cooperators managing legacy mine land sites in the western U.S. by addressing three persistent scientific challenges: (1) determining the contribution of mining-related metal sources to water quality degradation when substantial natural background metal sources are also present; (2) adequately characterizing key...
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Multidisciplinary Investigations of REE Mineralization at Mountain Pass and in the Southeast Mojave Desert, California

In this time of increased focus on renewable energy technologies, rare earth elements (REEs) are of critical importance. For example, neodymium (Nd) is a REE used in the generator and motor magnets of wind turbines and electric vehicles. Reliance on REE imports puts the U.S. at high risk for supply disruption. The project will integrate geology, geophysics, petrology, geochronology, and economic...
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Multidisciplinary Investigations of REE Mineralization at Mountain Pass and in the Southeast Mojave Desert, California

In this time of increased focus on renewable energy technologies, rare earth elements (REEs) are of critical importance. For example, neodymium (Nd) is a REE used in the generator and motor magnets of wind turbines and electric vehicles. Reliance on REE imports puts the U.S. at high risk for supply disruption. The project will integrate geology, geophysics, petrology, geochronology, and economic...
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Screening Techniques for Legacy Mine Land (LML) Sites Using Data Mining and Site-specific Studies in the Western U.S.

The main goal of this project is to provide a science-based approach for screening legacy mine land (LML) sites for remediation and identifying watersheds where relatively low-cost restoration efforts may yield substantial improvements to stream water quality. We are combing analysis of multiple existing regional data coverages with focused field studies to develop a protocol that land managers...
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Screening Techniques for Legacy Mine Land (LML) Sites Using Data Mining and Site-specific Studies in the Western U.S.

The main goal of this project is to provide a science-based approach for screening legacy mine land (LML) sites for remediation and identifying watersheds where relatively low-cost restoration efforts may yield substantial improvements to stream water quality. We are combing analysis of multiple existing regional data coverages with focused field studies to develop a protocol that land managers...
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Source, transport and deposition of critical minerals using trace metal and isotope systematics: Denver High Resolution Laboratory

The project objective is to develop and apply solution and in situ isotopic and trace element methods to emerging research opportunities to gain a better understanding of the processes controlling critical mineral deposits, metal mobility, and other geological inquiries.
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Source, transport and deposition of critical minerals using trace metal and isotope systematics: Denver High Resolution Laboratory

The project objective is to develop and apply solution and in situ isotopic and trace element methods to emerging research opportunities to gain a better understanding of the processes controlling critical mineral deposits, metal mobility, and other geological inquiries.
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Advancements in Geochemistry and Geomicrobiology of Energy Resources (AGGER)

The AGGER project’s purpose is to advance the understanding of geologic energy sources, generation, composition, movement, and production potential, including resource recovery from energy wastes.
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Advancements in Geochemistry and Geomicrobiology of Energy Resources (AGGER)

The AGGER project’s purpose is to advance the understanding of geologic energy sources, generation, composition, movement, and production potential, including resource recovery from energy wastes.
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Evaluation of Critical Elements in Carbonatites

The project objective is to determine the processes responsible for critical element enrichment in carbonatites and to enhance our ability to identify and assess economic deposits. This project will work at various scales to meet this objective and will primarily focus on deposits within the US or our Critical Minerals Mapping Initiative collaborative Nations Canada and Australia.
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Evaluation of Critical Elements in Carbonatites

The project objective is to determine the processes responsible for critical element enrichment in carbonatites and to enhance our ability to identify and assess economic deposits. This project will work at various scales to meet this objective and will primarily focus on deposits within the US or our Critical Minerals Mapping Initiative collaborative Nations Canada and Australia.
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Mineral Resource Assessment of U.S. Territories of the Caribbean Basin Archipelago including Puerto Rico, U.S. Virgin Islands and Adjacent Areas

Project objectives are to develop a modern probabilistic quantitative mineral resource assessment of Puerto Rico, U.S. Virgin Islands and adjacent geologically similar areas that examines the potential for minerals-based economic development and trade within the region.
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Mineral Resource Assessment of U.S. Territories of the Caribbean Basin Archipelago including Puerto Rico, U.S. Virgin Islands and Adjacent Areas

Project objectives are to develop a modern probabilistic quantitative mineral resource assessment of Puerto Rico, U.S. Virgin Islands and adjacent geologically similar areas that examines the potential for minerals-based economic development and trade within the region.
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Life Cycles of Byproduct Critical Minerals

Project objectives are to 1) assess the overall life cycle of selected byproduct critical elements tellurium (Te), indium (In), gallium (Ga), and germanium (Ge), 2) perform an assessment of critical element resources and examine the processes and conditions controlling the concentration of byproduct critical elements by deposit type, and 3) improve understanding of the surficial geochemistry of...
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Life Cycles of Byproduct Critical Minerals

Project objectives are to 1) assess the overall life cycle of selected byproduct critical elements tellurium (Te), indium (In), gallium (Ga), and germanium (Ge), 2) perform an assessment of critical element resources and examine the processes and conditions controlling the concentration of byproduct critical elements by deposit type, and 3) improve understanding of the surficial geochemistry of...
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Petrogenesis and REE Metallogenesis of 1.4 Ga Magmatism in the Conterminous U.S.

This project evaluated the petrology and metallogeny of rare earth element-mineralized 1.4 Ga intrusive systems at Mountain Pass and in the St. Francois Mountains relative to those of other, apparently, unmineralized 1.4 Ga intrusive systems in the conterminous U.S.
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Petrogenesis and REE Metallogenesis of 1.4 Ga Magmatism in the Conterminous U.S.

This project evaluated the petrology and metallogeny of rare earth element-mineralized 1.4 Ga intrusive systems at Mountain Pass and in the St. Francois Mountains relative to those of other, apparently, unmineralized 1.4 Ga intrusive systems in the conterminous U.S.
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Application of the National-Scale Soil Geochemical and Mineralogical Data for the Conterminous U.S.

Project goals were to produce interpretive products based on the existing national-scale geochemical and mineralogical data and maps for soils of the conterminous U.S.
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Application of the National-Scale Soil Geochemical and Mineralogical Data for the Conterminous U.S.

Project goals were to produce interpretive products based on the existing national-scale geochemical and mineralogical data and maps for soils of the conterminous U.S.
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Geophysical and Geochemical Approaches to Evaluating Rare Earth Element (REE) Potential in the Southeastern U.S.

Rare-earth elements (REE) are an essential component of numerous advanced technology applications including high efficiency batteries, emerging energy technologies, and key defense systems. The goal of this study was to assist in the evaluation of the distribution of rare earth element deposits in the southeastern U.S., with a focus on sediment-hosted resources.
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Geophysical and Geochemical Approaches to Evaluating Rare Earth Element (REE) Potential in the Southeastern U.S.

Rare-earth elements (REE) are an essential component of numerous advanced technology applications including high efficiency batteries, emerging energy technologies, and key defense systems. The goal of this study was to assist in the evaluation of the distribution of rare earth element deposits in the southeastern U.S., with a focus on sediment-hosted resources.
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Backgrounds and Baselines

This project developed a geochemical information base through studies ranging in scale from site-specific to regional and national.
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Backgrounds and Baselines

This project developed a geochemical information base through studies ranging in scale from site-specific to regional and national.
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