Bradley S. Van Gosen

Solution-collapse breccia pipe uranium deposits of the southern Colorado Plateau, northwestern Arizona, USA

Bradley S. Van Gosen, Susan M. Hall, Craig A. Johnson, William M. Benzel

Schematic cross section of a uranium ore-bearing, solution-collapse breccia pipe of the Grand Canyon region of northwestern Arizona. • Uranium deposits within solution-collapse breccia pipes occur in northwest Arizona. • Uraninite is the ore mineral, intergrown with at least 20 base-metal sulfide …

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Sandstone-hosted uranium deposits of the Colorado Plateau, USA

Susan M. Hall, Bradley S. Van Gosen, Robert A. Zielinski

More than 4,000 sandstone-hosted uranium occurrences host over 1.2 billion pounds of mined and in situ U3O8 throughout the Colorado Plateau. Most of the resources are in two distinct mineral systems with deposits hosted in the Triassic Chinle and Jurassic Morrison Formations. …

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Laboratory Simulation of Groundwater Along Uranium-Mining-Affected Flow Paths Near the Grand Canyon, Arizona, USA

Carleton R. Bern, Kate M. Campbell, Katherine Walton‐Day, Bradley S. Van Gosen

Abstract Mining of volumetrically small, but relatively enriched (average 0.6% U3O8) breccia pipe uranium (BPU) deposits near the Grand Canyon, Arizona, USA has the potential to affect groundwater and springs in the area. Such deposits also contain base metal sulfides that can …

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Finchite, Sr(UO2)2(V2O8)·5H2O, a new uranyl sorovanadate with the francevillite anion topology

Tyler L. Spano, Travis A. Olds, Susan M. Hall, Bradley S. Van Gosen et autres

Abstract Finchite (IMA2017-052), Sr(UO2)2(V2O8)·5H2O, is the first uranium mineral known to contain essential Sr. The new mineral occurs as yellow-green blades up to ~10 µm in length in surface outcrops of the calcrete-type uranium deposit at Sulfur Springs Draw, Martin County, Texas, …

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URANIUM DEPOSITS OF THE COLORADO PLATEAU

Nick Karl, Susan Hall, Bradley S. Van Gosen, Jeffrey L. Mauk

Uranium fuels the 93 currently operating domestic nuclear reactors that produce about 20% of U.S. electricity annually. Almost all of the uranium consumed in the U.S. in 2020 was imported. Uranium was identified as a critical mineral in 2018 and is the …

BATTERY AND ENERGY METALS: SIGNIFICANT DEPOSITS OF COBALT, GALLIUM, GERMANIUM, GRAPHITE, INDIUM, LITHIUM, MANGANESE, PGES, REES, AND TELLURIUM IN THE WESTERN USA

Jeffrey L. Mauk, Nick Karl, Amanda Ringer, Emma Boardman-Larson et autres

The Critical Minerals Initiative of the US Geological Survey’s Mineral Deposit Database Project: USMIN

Jeffrey L. Mauk, Nicholas A. Karl, Carma A. San Juan, Liam Knudsen et autres

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Reconnaissance study of the major and trace element content of bauxite deposits in the Arkansas bauxite region, Saline and Pulaski Counties, central Arkansas

Bradley S. Van Gosen, LaDonna M. Choate

First posted August 5, 2021 For additional information, contact: Director, Geology, Geophysics, and Geochemistry Science CenterU.S. Geological SurveyBox 25046, MS 973Denver, CO 80225 The Arkansas bauxite district, which comprises about 275 square miles (710 square kilometers) of central Arkansas, produced an order …

GEOLOGY OF U.S. CRITICAL MINERAL DEPOSITS AND RESOURCES FOR THE GREEN ECONOMY

Jeffrey L. Mauk, Nick Karl, Jonathan Funk, William R. Gnesda et autres

Critical minerals for the green economy include aluminum (Al), graphite, lithium (Li), manganese (Mn), and rare earth elements (REEs), which are produced as primary products; and antimony (Sb), arsenic (As), cobalt (Co), gallium (Ga), germanium (Ge), indium (In), and tellurium (Te), which …

Application of UNFC to rare earth elements and thorium comprehensive resource recovery projects in Argentina

Luis López Cordovez, Bradley S. Van Gosen, Charlotte Griffiths, Harikrishnan Tulsidas

This case study provides considerations related to the application of the United Nations Framework Classification for Resources (UNFC), and in particular, the specific Guidelines for Application of the UNFC for uranium and thorium resources [1] to rare earth elements (REE) and thorium …

Bayesian modeling of non-stationary, univariate, spatial data for the Earth sciences

Karl J. Ellefsen, Bradley S. Van Gosen

For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment-visit

User guide to the bayesian modeling of non-stationary, univariate, spatial data using R language package BMNUS

Karl J. Ellefsen, Margaret A. Goldman, Bradley S. Van Gosen

its natural and living resources, natural hazards, and the environment-visit