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Super gene alternation of magnetite and pyrite and the role of their alternation products in the fixation of uranium from the circulating media. Vol. 3

Abstract

In most of the Egyptian altered radioactive granites, highly magnetic heavy particles were found to be radioactive. They are a mixture of several iron oxide minerals which are products of super gene alternation of the preexisting hypo gene iron-bearing minerals especially magnetite and pyrite. The end products of this super gene alternation are mainly hydrated iron oxide minerals limonite and/or goethite. During the alternation, deformation and defects in the mineral structure took place, thereby promoting diffusion of the substitutional and interstitial ions (uranium) towards these sites. The mechanism of the alternation of the hypo gene iron-bearing minerals, magnetite and pyrite to form the secondary mineral hematite, limonite and goethite; and the role of these secondary minerals in fixing uranium from the circulating media, and as indicators to the radioactivity of the host rocks are discussed. 2 figs.
Authors:
El-Gemmizi, M A [1] 
  1. Nuclear Materials Authority, Cairo, (Egypt)
Publication Date:
Mar 01, 1996
Product Type:
Miscellaneous
Report Number:
INIS-EG-002; CONF-960316-
Reference Number:
SCA: 050100; 540250; PA: AIX-28:029963; EDB-97:053760; SN: 97001764820
Resource Relation:
Conference: 6. conference of nuclear sciences and applications, Cairo (Egypt), 15-20 Mar 1996; Other Information: PBD: Mar 1996; Related Information: Is Part Of Proceedings of the sixth conference of nuclear sciences and applications. Vol. 1-4; PB: 1760 p.
Subject:
05 NUCLEAR FUELS; 54 ENVIRONMENTAL SCIENCES; URANIUM; EGYPTIAN ARAB REPUBLIC; MAGNETITE; PYRITE; COMPILED DATA; DEFORMATION; GRANITES; IRON OXIDES; LIMONITE; RADIOACTIVITY; ROCKS
OSTI ID:
455838
Research Organizations:
Atomic Energy Establishment, Cairo (Egypt); Egyptian Society of Nuclear Sciences and Applications, Cairo (Egypt)
Country of Origin:
Egypt
Language:
English
Other Identifying Numbers:
Other: ON: DE97620041; TRN: EG9601814029963
Availability:
INIS; OSTI as DE97620041
Submitting Site:
INIS
Size:
pp. 454
Announcement Date:

Citation Formats

El-Gemmizi, M A. Super gene alternation of magnetite and pyrite and the role of their alternation products in the fixation of uranium from the circulating media. Vol. 3. Egypt: N. p., 1996. Web.
El-Gemmizi, M A. Super gene alternation of magnetite and pyrite and the role of their alternation products in the fixation of uranium from the circulating media. Vol. 3. Egypt.
El-Gemmizi, M A. 1996. "Super gene alternation of magnetite and pyrite and the role of their alternation products in the fixation of uranium from the circulating media. Vol. 3." Egypt.
@misc{etde_455838,
title = {Super gene alternation of magnetite and pyrite and the role of their alternation products in the fixation of uranium from the circulating media. Vol. 3}
author = {El-Gemmizi, M A}
abstractNote = {In most of the Egyptian altered radioactive granites, highly magnetic heavy particles were found to be radioactive. They are a mixture of several iron oxide minerals which are products of super gene alternation of the preexisting hypo gene iron-bearing minerals especially magnetite and pyrite. The end products of this super gene alternation are mainly hydrated iron oxide minerals limonite and/or goethite. During the alternation, deformation and defects in the mineral structure took place, thereby promoting diffusion of the substitutional and interstitial ions (uranium) towards these sites. The mechanism of the alternation of the hypo gene iron-bearing minerals, magnetite and pyrite to form the secondary mineral hematite, limonite and goethite; and the role of these secondary minerals in fixing uranium from the circulating media, and as indicators to the radioactivity of the host rocks are discussed. 2 figs.}
place = {Egypt}
year = {1996}
month = {Mar}
}