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Press Releases, Technical Announcements, Publications, Field Reports, and Science Highlights.

 
 

Friday, May 25, 2018

Historic groundwater quality of in situ recovery (ISR) uranium mines, Texas

USGS Publication: Data Release
In situ recovery (ISR) uranium mining is a technique in which uranium is extracted by a series of injection and recovery wells developed in a permeable sandstone host rock. Chemical constituents (lixiviants) are added to groundwater injection wells to mobilize uranium into groundwater...

Wednesday, December 20, 2017

The discovery and character of Pleistocene calcrete uranium deposits in the Southern High Plains of west Texas, United States

USGS Publication: Scientific Investigations Report 2017-5134

This report describes the discovery and geology of two near-surface uranium deposits within calcareous lacustrine strata of Pleistocene age in west Texas, United States. Calcrete uranium deposits have not been previously reported in the United States. The west Texas uranium deposits share characteristics with some calcrete uranium deposits in...


Tuesday, November 14, 2017

USGS Assesses Uranium Potential in Southern High Plains

Press Release & Publication  The U.S. Geological Survey estimates a mean of 40 million pounds of in-place uranium oxide remaining as potential undiscovered resources in the Southern High Plains region of Texas, New Mexico, and Oklahoma.


Friday, October 27, 2017

Grade, tonnage, and location data for world calcrete-type surficial uranium deposits

USGS Publication: Data Release
Grade and tonnage data for calcrete-type surficial uranium deposits found in 11 different countries were compiled. Fifty-eight deposits with reported grade and tonnage, and thirty-five occurrences for which there is no reported resource are tabulated in separate Excel workbook spreadsheets...

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.


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