Rare earth element patterns in Nigerian coals

I. Ewa; S. Elegba; J. Adetunji

doi:10.1007/bf02165693

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 213: Issue 3

Rare earth element patterns in Nigerian coals

Authors:

I. Ewa

I. Ewa Ahmadu Bello University Centre for Energy Research and Training Zaria Nigeria

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S. Elegba

S. Elegba Ahmadu Bello University Centre for Energy Research and Training Zaria Nigeria

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J. Adetunji

J. Adetunji Ahmadu Bello University Physics Department Zaria Nigeria

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Pages:: 213–224

Online Publication Date:: 27 Sep 2005

Publication Date:: 17 Jun 1996

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02165693

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Abstract

Rare Earth Elements (REE's) retain group coherence in their environment and are therefore useful geochemical markers. We report the pattern of ten REE's (La, Ce, Nd, Sm, Eu, Gd, Tb, Dy, Yb, Lu) determined by Instrumental Neutron Activation Analysis (INAA) for coals obtained from eight mines in Nigeria, namely, Okaba, Enugu, Ogbete, Onyeama, Gombe, Lafia, Asaba and Afikpo. Our results show the existence of fractionations with the highest index of 13.19 for Lafia coal, depletion in HREE, negative Eu anomaly for most of the coals, REE patterns that are consistent with chondritic trends; prominent (Eu/Eu^*)_cn for Okaba and Gombe coals. Variations in geochemical data observed could suggest strong departures from band metamorphism during the coalification events of the Benue Trough geosynclines, where the coal deposits are all located.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)