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Geology, Geophysics, and Geochemistry Science Center

Welcome to the Geology, Geophysics, and Geochemistry Science Center (GGGSC) located in Lakewood, Colorado on the Denver Federal Center. At GGGSC, we apply expertise in geology, geophysics, and geochemistry to interdisciplinary efforts in support of the USGS mission to address the Nation’s important earth science issues, with an emphasis on mineral resources.

News

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USGS Updates Mineral Database with Indium Deposits in the United States

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Bipartisan Infrastructure Law helps map critical mineral resources in Nevada and Oregon

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Scientists Discover Significant Critical Minerals Potential in Northern Maine

Publications

Rapid and gradual permafrost thaw: A tale of two sites

Warming temperatures and increasing disturbance by wildfire and extreme weather events is driving permafrost change across northern latitudes. The state of permafrost varies widely in space and time, depending on landscape, climate, hydrologic, and ecological factors. Despite its importance, few approaches commonly measure and monitor the changes in deep (>1 m) permafrost conditions with high spat

Formation of orogenic gold deposits by progressive movement of a fault-fracture mesh through the upper crustal brittle-ductile transition zone

Orogenic gold deposits are comprised of complex quartz vein arrays that form as a result of fluid flow along transcrustal fault zones in active orogenic belts. Mineral precipitation in these deposits occurs under variable pressure conditions, but a mechanism explaining how the pressure regimes evolve through time has not previously been proposed. Here we show that extensional quartz veins at the G

Antimony in mine wastes: Geochemistry, mineralogy, microbiology

Antimony (Sb) is a valuable mined commodity, used mostly in fire retardants, and considered a critical element. It is also a potential environment hazard classed as a carcinogen. Antimony is concentrated in tailings and waste rock from Sb mines as well as other locations, such as precious metal deposits, where Sb is present in the ore but not recovered. This review covers the aqueous geochemistry,

Science

USGS Geochemical and Microanalytical Reference Materials Distribution

The Geology, Geophysics, and Geochemistry Science Center distributes geochemical reference materials and microanalytical reference materials. Reference materials are suitable for use in testing analytical methodologies and as quality control samples.
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USGS Geochemical and Microanalytical Reference Materials Distribution

The Geology, Geophysics, and Geochemistry Science Center distributes geochemical reference materials and microanalytical reference materials. Reference materials are suitable for use in testing analytical methodologies and as quality control samples.
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Hyperspectral Imaging of Mineral Resources from New and Old Origins: Minerals for the Nation’s Economy and Utilization of Legacy Mine Lands

This project will produce maps of surface mineralogy at 15 m spatial resolution covering the largest contiguous area of hyperspectral imagery that has ever been assembled for the U.S., over 380,000 sq. km. in California and Nevada. We are developing new methods to apply these data to map critical minerals, including minerals critical for battery fabrication, and to evaluate resources available...
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Hyperspectral Imaging of Mineral Resources from New and Old Origins: Minerals for the Nation’s Economy and Utilization of Legacy Mine Lands

This project will produce maps of surface mineralogy at 15 m spatial resolution covering the largest contiguous area of hyperspectral imagery that has ever been assembled for the U.S., over 380,000 sq. km. in California and Nevada. We are developing new methods to apply these data to map critical minerals, including minerals critical for battery fabrication, and to evaluate resources available...
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21st Century Prospecting: AI-assisted Surveying of Critical Mineral Potential

The USGS Mineral Resources Program entered a partnership with the Defense Advanced Research Project Agency (DARPA). The partnership objective is to accelerate advances in science for understanding critical minerals, assessing unknown resources, and increase mineral security for the Nation so USGS can more efficiently assess critical mineral deposits within the United States.
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21st Century Prospecting: AI-assisted Surveying of Critical Mineral Potential

The USGS Mineral Resources Program entered a partnership with the Defense Advanced Research Project Agency (DARPA). The partnership objective is to accelerate advances in science for understanding critical minerals, assessing unknown resources, and increase mineral security for the Nation so USGS can more efficiently assess critical mineral deposits within the United States.
Learn More