Eastern Mineral and Environmental Resources Science Center

Geology of Mineral Deposits

An understanding of the basic geologic characteristics of mineral deposits is crucial to evaluating known deposits and delineating prospective areas of mineralization.  Studies on mineralogy, framework geology, geochronology, and ore deposit genesis can help to better define the characteristics of mineral deposits and can lead to new discoveries of minerals.

Filter Total Items: 7
Date published: July 9, 2019
Status: Active

Spectral Characteristics and Mapping of Lithium-rich Playas for Use in Western U.S. Basin and Range Mineral Assessment of Lithium

Project objectives are to compile and examine mineral maps of the known lithium-bearing playas in the U.S., Chile, and Argentina using field and remote sensing data to better understand the mineralogy of these deposits. After mineral assemblages are identified, mineral maps for lithium-rich plays will be compiled using ASTER data.

Contacts: John Mars
Date published: August 3, 2018
Status: Active

Synthesis of the Tectonic, Magmatic, and Metallogenic Evolution of the Midcontinent Rift System

The overall project objective is to develop a comprehensive synthesis of the tectonic, magmatic, and metallogenic evolution of the Midcontinent Rift System (MRS) through time by integrating geophysical, magmatic, and geochemical data and to create 3-D models of the rift over its evolution.

Contacts: Laurel Woodruff
Date published: August 3, 2018
Status: Active

Rare Earth Element Accumulation Processes Resulting in High-Value Metal Enrichments in Regolith

The Southeastern United States contains numerous granites of the type that contain high concentrations of rare earth elements. We are conducting studies of these granites to advance rare earth element (REE) resource identification and assessment by resulting in an improved understanding of the fundamental source rock types, modes and occurrences, and geochemical parameters necessary for the...

Contacts: Nora Foley
Date published: August 3, 2018
Status: Active

Radiogenic and Stable Isotope Methods

Our work focuses on collaborating with high-priority U.S. Geological Survey projects and other Federal and international agencies, and on providing radiogenic and stable isotope analyses to support mineral- and environmentally-related geologic investigations.

Contacts: Robert Ayuso
Date published: July 31, 2018
Status: Completed

Geoenvironmental Model Refinement and Advancement

The overall objective of our project is to take the abundant geoenvironmental model research that the Mineral Resources Program has supported, and use it to refine the geoenvironmental model concept to make it more useable for our current stakeholders.

Contacts: Bob Seal
Date published: July 31, 2018
Status: Active

Emerging Geoenvironmental Issues Related to Proposed Mining in the Lake Superior Region

We are studying environmental issues related to mining, and potential mining, in the Great Lakes region, continuing the study of characterizing baseline geochemistry of several watersheds in Minnesota and Michigan, examining the potential for aquatic toxicity from metals, and examining the acid-neutralizing and acid-generating potentials of mine waste, and the environmental, and possible human...

Date published: June 19, 2018
Status: Active

Development of Assessment Techniques and Analysis

The Development of Assessment Techniques and Analysis Project (DATAP) objective is to modernize the application and development of USGS mineral resource and integrated multiresource assessment methodologies and capacity that are applicable at a variety of spatial and temporal scales, and national and international in scope.