Mineral Resources Program

Rare Earth Elements (REE)

Filter Total Items: 33
Date published: May 22, 2018
Status: Active

GIS Prospectivity Analysis for Critical Minerals in Ore-Forming Systems in Alaska

Alaska is dominated by a history of tectonic events that foster mobilization and concentration of a wide variety of mineral commodities that are critical to the US economy and are vital to national defense, renewable-energy, and emerging electronics technologies.

Date published: May 14, 2018
Status: Active

New Applications of Hyperspectral Imaging to Delineate Critical Minerals Concentrated in Regolith and Mine Waste Materials

Our project will develop new and innovative spectral methods and remote sensing tools for understanding how critical minerals are concentrated by weathering, regolith/soil formation, mining, runoff and ore processing. These tools will help us to use mineralogy derived from spectral measurements (lab, field, and remote sensing) to help delineate vectors towards recoverable resources and to...

Date published: May 8, 2018
Status: Completed

Rare Earth Element Deposits in the Southeast Mojave Desert

In an effort to better understand domestic resource potential, the USGS is investigating the genetic relationship between rare earth element deposits at Mountain Pass, California and Music Valley (Pinto Mountains, California) and extend these studies across a 130-km long belt of alkaline Proterozoic rocks in the southeast Mojave Desert. Such a combined study would significantly improve our...

Contacts: David Ponce
Date published: May 8, 2018
Status: Completed

Continental Scale Geophysics — Integrated Approaches to Delineate Prospective Environments for Critical Metals

Regional geophysical data that are available over continental scales such as magnetic, gravity, and magnetotelluric data can provide a foundation towards identifying and understanding the footprints and deep plumbing systems underlying these important ore systems. Our project will use continental-scale geophysical data to map the locations of deep crustal and mantle structures that may act as...

Date published: May 8, 2018
Status: Active

From Outcrop to Ions: development and application of in-situ isotope ratio measurements to solve geologic problemss

Project objectives are to (1) develop innovative analytical techniques for isotope geochemistry and U-Pb geochronology using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), and (2) apply these techniques to collaborative research projects of high priority to the Mineral Resources Program, including studies related to the formation of "critical mineral" deposits, and...

Date published: April 6, 2018
Status: Completed

USGS High Resolution Spectral Library

The USGS Spectral Library contains reflectance spectra, including samples of minerals, rocks, soils, physically constructed as well as mathematically computed mixtures, plants, vegetation communities, microorganisms, and man-made materials. The samples and spectra collected were assembled for the purpose of using spectral features for the remote detection of these and similar materials. The...

Date published: September 30, 2016
Status: Completed

Fluids in Rare Earth Element (REE) Ore Genesis

The project objective is to better understand the role fluids play in the formation of ore-grade rare earth element enrichment. In many rare earth element deposits, enrichment of rare earth elements is largely controlled by their transport in fluids (orthomagmatic, hydrothermal, groundwater). The project focuses on carbonatite-related deposits because these deposits are the world's primary...

Date published: September 30, 2015
Status: Completed

United States Critical Mineral Resources in a Global Context

USGS updated a report on U.S. mineral resources for selected critical mineral commodites. This report updates USGS Professional Paper 820 (1973), which was published when many of the commodities that are covered in this new volume were only of minor importance. Today, advanced technologies have increased the demand for and production of mineral commodities for nearly all elements in the...

Contacts: Klaus J Schulz, Dwight Bradley
Date published: September 30, 2015
Status: Completed

Airborne Geophysics for Rare Earth Element Deposits (AGREED)

The USGS Airborne Geophysics for Rare Earth Element Deposits (AGREED) project coordinated with industry to use high resolution airborne geophysical data collected over some of the advanced rare earth element (REE) projects in the U.S. These data were analyzed, interpreted and modeled to generate an improved understanding of the geologic setting, framework, and ore genesis for REE deposits. In...