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Title: Geology and recognition criteria for sandstone uranium deposits in mixed fluvial-shallow marine sedimentary sequences, South Texas. Final report

Abstract

Uranium deposits in the South Texas Uranium Region are classical roll-type deposits that formed at the margin of tongues of altered sandstone by the encroachment of oxidizing, uraniferous solutions into reduced aquifers containing pyrite and, in a few cases, carbonaceous plant material. Many of the uranium deposits in South Texas are dissimilar from the roll fronts of the Wyoming basins. The host sands for many of the deposits contain essentially no carbonaceous plant material, only abundant disseminated pyrite. Many of the deposits do not occur at the margin of altered (ferric oxide-bearing) sandstone tongues but rather occur entirely within reduced, pyurite-bearing sandstone. The abundance of pyrite within the sands probably reflects the introduction of H/sub 2/S up along faults from hydrocarbon accumulations at depth. Such introductions before ore formation prepared the sands for roll-front development, whereas post-ore introductions produced re-reduction of portions of the altered tongue, leaving the deposit suspended in reduced sandstone. Evidence from three deposits suggests that ore formation was not accompanied by the introduction of significant amounts of H/sub 2/S.

Authors:
;
Publication Date:
Research Org.:
Adams (Samuel S.) and Associates, Boulder, CO (USA); Smith (R.B.) and Associates, Austin, TX (USA)
OSTI Identifier:
6554832
Report Number(s):
GJBX-4(81)
TRN: 81-009083
DOE Contract Number:  
AC13-76GJ01664
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; TEXAS; URANIUM DEPOSITS; GEOLOGY; HYDROGEN SULFIDES; PYRITE; SANDSTONES; SEDIMENTS; STRATIGRAPHY; CHALCOGENIDES; GEOLOGIC DEPOSITS; HYDROGEN COMPOUNDS; IRON COMPOUNDS; IRON SULFIDES; MINERAL RESOURCES; MINERALS; NORTH AMERICA; ORES; PYRITES; RESOURCES; ROCKS; SEDIMENTARY ROCKS; SOUTHWEST REGION; SULFIDES; SULFUR COMPOUNDS; SULFUR ORES; TRANSITION ELEMENT COMPOUNDS; USA; 050100* - Nuclear Fuels- Reserves, Exploration, & Mining

Citation Formats

Adams, S. S., and Smith, R. B. Geology and recognition criteria for sandstone uranium deposits in mixed fluvial-shallow marine sedimentary sequences, South Texas. Final report. United States: N. p., 1981. Web. doi:10.2172/6554832.
Adams, S. S., & Smith, R. B. Geology and recognition criteria for sandstone uranium deposits in mixed fluvial-shallow marine sedimentary sequences, South Texas. Final report. United States. doi:10.2172/6554832.
Adams, S. S., and Smith, R. B. Thu . "Geology and recognition criteria for sandstone uranium deposits in mixed fluvial-shallow marine sedimentary sequences, South Texas. Final report". United States. doi:10.2172/6554832. https://www.osti.gov/servlets/purl/6554832.
@article{osti_6554832,
title = {Geology and recognition criteria for sandstone uranium deposits in mixed fluvial-shallow marine sedimentary sequences, South Texas. Final report},
author = {Adams, S. S. and Smith, R. B.},
abstractNote = {Uranium deposits in the South Texas Uranium Region are classical roll-type deposits that formed at the margin of tongues of altered sandstone by the encroachment of oxidizing, uraniferous solutions into reduced aquifers containing pyrite and, in a few cases, carbonaceous plant material. Many of the uranium deposits in South Texas are dissimilar from the roll fronts of the Wyoming basins. The host sands for many of the deposits contain essentially no carbonaceous plant material, only abundant disseminated pyrite. Many of the deposits do not occur at the margin of altered (ferric oxide-bearing) sandstone tongues but rather occur entirely within reduced, pyurite-bearing sandstone. The abundance of pyrite within the sands probably reflects the introduction of H/sub 2/S up along faults from hydrocarbon accumulations at depth. Such introductions before ore formation prepared the sands for roll-front development, whereas post-ore introductions produced re-reduction of portions of the altered tongue, leaving the deposit suspended in reduced sandstone. Evidence from three deposits suggests that ore formation was not accompanied by the introduction of significant amounts of H/sub 2/S.},
doi = {10.2172/6554832},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}