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The Geology And Geochemistry Of Zona Uranium Occurence, Upper Benue Trough; N.E. Nigeria.

Journal Article:

Abstract

The Zona uranium is located at the NE flank of the Peta syncline, which is an arm of the Middle Gongola Basin. The hostreok- the Cretaceous Bima sandstone bears the imprint of more than two preore tectonic episodes which are thought to have resulted from reactivation of paleolineaments in the basement since the Pan African Orogeny. The mineralized zone occurs at point of intersection of a set of NE-SW trending shear zone and N-S fracture system. The centre of the ore zone exhibits intense alteration features such as sericitization, ferruginization, silification, remobilization and powdering of the rock matrix. These alteration features diminish progressively from the core to the periphery of the ore zone. The main uraniferous minerals identified are phosphouranylite and meta-autunite. These occur mainly absorbed to iron oxides, in silicified veinlets and partly disseminated in the matrix of the sandstone. Evaluation of the analytical data of 9 elements in 67 rock samples suggest a close link between ferruginization and enrichment of uranium. A model involving the leaching of the uranium from conceal volcanics (rhyolites) and granites at depths by heated groundwater residual magmatic solutions is proposed.
Authors:
Ogunleye, P O; [1]  Okujeni, C D [2] 
  1. Centre For Energy Research And Training, Ahmadu Bello University, Zaria (Nigeria)
  2. Department Of Geology, Ahmadu Bello University, Zaria (Nigeria)
Publication Date:
Dec 31, 1993
Product Type:
Journal Article
Reference Number:
SCA: 050100; PA: AIX-27:004692; EDB-96:034469; SN: 96001530499
Resource Relation:
Journal Name: Journal of Mining and Geology; Journal Issue: 1993 issue; Other Information: PBD: 1993
Subject:
05 NUCLEAR FUELS; NIGERIA; URANIUM ORES; GEOCHEMISTRY; MINERALOGY; URANIUM DEPOSITS
OSTI ID:
183194
Research Organizations:
Ahmadu Bello Univ., Zaria (Nigeria)
Country of Origin:
Nigeria
Language:
English
Other Identifying Numbers:
Journal ID: JMIGA5; ISSN 0022-2763; TRN: NG9500002004692
Submitting Site:
INIS
Size:
pp. 1-8
Announcement Date:

Journal Article:

Citation Formats

Ogunleye, P O, and Okujeni, C D. The Geology And Geochemistry Of Zona Uranium Occurence, Upper Benue Trough; N.E. Nigeria.. Nigeria: N. p., 1993. Web.
Ogunleye, P O, & Okujeni, C D. The Geology And Geochemistry Of Zona Uranium Occurence, Upper Benue Trough; N.E. Nigeria.. Nigeria.
Ogunleye, P O, and Okujeni, C D. 1993. "The Geology And Geochemistry Of Zona Uranium Occurence, Upper Benue Trough; N.E. Nigeria." Nigeria.
@misc{etde_183194,
title = {The Geology And Geochemistry Of Zona Uranium Occurence, Upper Benue Trough; N.E. Nigeria.}
author = {Ogunleye, P O, and Okujeni, C D}
abstractNote = {The Zona uranium is located at the NE flank of the Peta syncline, which is an arm of the Middle Gongola Basin. The hostreok- the Cretaceous Bima sandstone bears the imprint of more than two preore tectonic episodes which are thought to have resulted from reactivation of paleolineaments in the basement since the Pan African Orogeny. The mineralized zone occurs at point of intersection of a set of NE-SW trending shear zone and N-S fracture system. The centre of the ore zone exhibits intense alteration features such as sericitization, ferruginization, silification, remobilization and powdering of the rock matrix. These alteration features diminish progressively from the core to the periphery of the ore zone. The main uraniferous minerals identified are phosphouranylite and meta-autunite. These occur mainly absorbed to iron oxides, in silicified veinlets and partly disseminated in the matrix of the sandstone. Evaluation of the analytical data of 9 elements in 67 rock samples suggest a close link between ferruginization and enrichment of uranium. A model involving the leaching of the uranium from conceal volcanics (rhyolites) and granites at depths by heated groundwater residual magmatic solutions is proposed.}
journal = {Journal of Mining and Geology}
issue = {1993 issue}
journal type = {AC}
place = {Nigeria}
year = {1993}
month = {Dec}
}