Geochemistry of surficial uranium deposits from central Jordan
Author
Source
The Jordan Journal of Earth and Environmental Sciences
Issue
Vol. 6, Issue 3(s) (30 Jun. 2014), pp.11-22, 12 p.
Publisher
The Hashemite University Deanship of Academic Research and Graduate
Publication Date
2014-06-30
Country of Publication
Jordan
No. of Pages
12
Main Subjects
Earth Sciences, Water and Environment
Topics
Abstract EN
Inhomogeneous unusual surface uranium mineralization hosted by chalk marl/travertine and calcrete/top soil covers large areas in central Jordan.
Quarries and trenches with bituminous marl, varicolored marble, travertine and caliche were sampled to understand the geochemistry of the uranium deposits.
The samples were characterized mineralogically and chemically using XRD, XRF, SEM, EDX techniques.
Relatively high uranium concentrations were found in the calcrete samples where it reaches up to 419 ppm.
The secondary uranium mineralization is restricted to the permeable fractured and porous zones.
The combustion of the bituminous marl led to the formation of the varicoloured marble in central Jordan.
This was followed by the action of circulating highly alkaline water that accelerated the leaching of the redox sensitive trace elements as U and V.
Such an alkaline oxidizing environment (pH~12.7) is currently active in Maqarin area, north Jordan.
The paleo-circulating water in the combusted rocks of central Jordan oxidized the dissolved V4+ to V5+ and fixed the uranyl-ion as uranyl vanadate.
Strelkinite and/or tyuyamunite precipitation and the solid solution, between the two end members, were dependent on the Ca/Na ratio in solution.
Carnotite is restricted to the veins associated with the varicoloured marble.
The uranyl-vanadate minerals were precipitated from highly alkaline solutions during the dry periods after the precipitation of the thick travertine deposits.
American Psychological Association (APA)
Khuri, Hani N.. 2014. Geochemistry of surficial uranium deposits from central Jordan. The Jordan Journal of Earth and Environmental Sciences،Vol. 6, no. 3(s), pp.11-22.
https://search.emarefa.net/detail/BIM-556749
Modern Language Association (MLA)
Khuri, Hani N.. Geochemistry of surficial uranium deposits from central Jordan. The Jordan Journal of Earth and Environmental Sciences Vol. 6, no. 3 (Jun. 2014), pp.11-22.
https://search.emarefa.net/detail/BIM-556749
American Medical Association (AMA)
Khuri, Hani N.. Geochemistry of surficial uranium deposits from central Jordan. The Jordan Journal of Earth and Environmental Sciences. 2014. Vol. 6, no. 3(s), pp.11-22.
https://search.emarefa.net/detail/BIM-556749
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 21-22
Record ID
BIM-556749