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Wednesday, March 01, 2017

Geochemistry and hydrology of perched groundwater springs: assessing elevated uranium concentrations at Pigeon Spring relative to nearby Pigeon Mine, Arizona (USA)

Outside Publication: Hydrogeology Journal
The processes that affect water chemistry as the water flows from recharge areas through breccia-pipe uranium deposits in the Grand Canyon region of the southwestern United States are not well understood. Pigeon Spring had elevated uranium in 1982 (44 μg/L), compared to other perched springs...

Sunday, January 01, 2017

Genetic and grade and tonnage models for sandstone-hosted roll-type uranium deposits, Texas Coastal Plain, USA

Outside Publication: Ore Geology Reviews
A genetic deposit model was developed for economic sandstone-hosted uranium deposits that formed in Eocene through Pliocene sandstones in the Texas Coastal Plain. Here 254 uranium occurrences, including 169 deposits, 73 prospects, 6 showings and 4 anomalies, have been identified. About 80 million pounds of U308 have been produced and about 60 million pounds of identified producible U308 remain in place.  Uranium is currently being produced from this region, and the deposit model may help identify new mineable deposits.  


Tuesday, October 04, 2016

USGS mineral-resource assessment of Sagebrush Focal Areas in the western United States

USGS Publication: Fact Sheet 2016-3074
U.S. Geological Survey (USGS) scientists have completed an assessment of the mineral-resource potential, including the uranium potential, of nearly 10 million acres of Federal and adjacent lands in Idaho, Montana, Nevada, Oregon, Utah, and Wyoming.  The assessment of these lands, identified as Sagebrush Focal Areas, was done at the request of the Bureau of Land Management. The assessment results will be used in the decision-making process that the Department of the Interior is pursuing toward the protection of large areas of contiguous sagebrush habitat for the greater sage-grouse (Centrocercus urophasianus) in the Western United States. The detailed results of this ambitious study are published in the five volumes of USGS Scientific Investigations Report 2016–5089 and seven accompanying data releases.

 


Tuesday, August 02, 2016

Use of mineral/solution equilibrium calculations to assess the potential for carnotite precipitation from groundwater in the Texas Panhandle, USA

Outside Publication: Applied Geochemistry
This study investigated the potential for the uranium mineral carnotite (K2(UO2)2(VO4)2x3H2O) to precipitate from evaporating groundwater in the Texas Panhandle region of the United States. Carnotite saturation did occur, and supports the potential for the formation of calcrete-type uranium deposits in the Texas panhandle.


Thursday, March 03, 2016

USGS Assesses Baseline Conditions Prior to Uranium Mining near Grand Canyon National Park

USGS News
Scientists have collected and analyzed 84 environmental samples to establish baseline data prior to any active uranium mining activities at the Canyon Uranium Mine, located south of Grand Canyon National Park.  This baseline information will play an important role in assessing if contaminants escape from the mine site and how they would move through the environment once mining operations begin.


Wednesday, December 02, 2015

Estimates of Potential Uranium in South Texas Could Equal Five Years of U.S. Needs

Press Release & Publication 
The potential for almost five years of annual domestic U.S. nuclear fuel requirements may exist in south Texas, according to a new USGS assessment of both identified and undiscovered uranium oxide resources. This assessment estimates 60 million pounds of identified, but unmined, uranium resources, and more than 200 million pounds of newly estimated undiscovered resources. …


Tuesday, December 01, 2015

Application of the NEA/IAEA and UNFC-2009 classification systems to the Coles Hill Uranium Deposit, Virginia and Mountain Pass Thorium and Rare Earth Elements Deposit, California

Outside Publication: International Atomic Energy Agency
Eight eight case studies that demonstrate the classification of uranium or thorium resources including the Coles Hill uranium deposit in the United States into the United Nations Framework Classification for Fossil Energy and Mineral Reserves and Resources 2009 (UNFC-2009) system.


Wednesday, September 23, 2015

Persistent U(IV) and U(VI) following in-situ recovery (ISR) mining of a sandstone uranium deposit, Wyoming, USA

Outside Publication: Applied Geochemistry
Drill-core samples from a sandstone-hosted uranium (U) deposit in Wyoming were characterized to determine the abundance and distribution of uranium following in-situ recovery (ISR) mining with oxygen- and carbon dioxide-enriched water. Concentrations of uranium, collected from ten depth intervals, ranged from 5 to 1920 ppm...

Wednesday, October 01, 2014

Energy Map of Southwestern Wyoming, Part B—Oil and Gas, Oil Shale, Uranium, and Solar

USGS Publication: Data Series 843
​The U.S. Geological Survey (USGS) has compiled Part B of the Energy Map of Southwestern Wyoming for the Wyoming Landscape Conservation Initiative (WLCI). Part B consists of oil and gas, oil shale, uranium, and solar energy resource information in support of the WLCI.


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Page Last Modified: Wednesday, December 03, 2014