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Distribution, mode of occurrence, and significance of rare-earth elements in coal from Samaleswari open cast coal blocks, Odisha, India with their provenance and paleodepositional environment

This study aims to thoroughly examine the distribution, concentration, and occurrence of a broad selection of REEs and major elements in coal samples from Samaleswari coal block, IB valley, Odisha, India using advanced geochemical tools. A total of 85 coal samples from four boreholes were characteri...

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Main Authors: Kumari, Sneha, Roy, Toushali, Chakladar, Saswati, Kumar, Alok, Arif, Md., Mohanty, Ashok, Kundu, Rajen, Chakravarty, Sanchita
Format: Article
Published: Springer Verlag (Germany) 2023
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Q Science (General)
Online Access:http://eprints.um.edu.my/38516/
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spelling my.um.eprints.385162023-11-27T08:00:06Z http://eprints.um.edu.my/38516/ Distribution, mode of occurrence, and significance of rare-earth elements in coal from Samaleswari open cast coal blocks, Odisha, India with their provenance and paleodepositional environment Kumari, Sneha Roy, Toushali Chakladar, Saswati Kumar, Alok Arif, Md. Mohanty, Ashok Kundu, Rajen Chakravarty, Sanchita Q Science (General) This study aims to thoroughly examine the distribution, concentration, and occurrence of a broad selection of REEs and major elements in coal samples from Samaleswari coal block, IB valley, Odisha, India using advanced geochemical tools. A total of 85 coal samples from four boreholes were characterized using proximate analysis and calorific value measurements. The corresponding ash samples were examined using X-ray Diffraction (XRD), X-ray Fluorescence (XRF), Electron Probe Microanalyzer (EPMA), and Inductively Coupled Plasma Mass Spectrometry (ICP-MS).The coal ash samples were delineated to be rich in SiO2 (42-65%) along with a lower proportion of Al2O3 (24-41%), Fe2O3 (5-6%), and TiO2 (1-2%). The average concentration of REEs in the four boreholes was found to be 510 ppm, with the distribution pattern being Ce > La > Nd > Y > Pr > Sc > Sm > Gd > Dy > Er > Yb > Eu > Ho > Tb > Tm > Lu. The concentration of critical REEs varied in the range of 100-300 ppm, and outlook coefficient (C-outl) ranged from 0.7 to 1.0, demonstrating our coal seams' suitability as a promising source of REEs. A higher concentration of REEs in BH1 was correlated with a relatively higher proportion of apatite. The increment in REE concentration with depth was speculated to be due to their close association with hematite, especially in BH1 and BH2. A strong positive correlation of all the REEs with clay minerals and specifically TiO2 reinstates their abundance in fine-grained clastic sedimentary rocks which are not significantly affected by weathering. Point analysis using EPMA and Scanning Electron Microscope-Energy Dispersive Analysis X-ray (SEM-EDAX) confirmed the co-existence of La, Ce, Pr, and Nd in the Fe-containing aluminosilicate matrix. In addition, the major oxide ratio and their plot entail terrestrial depositional environment in the basin during coal formation and deposited in semi-arid climatic conditions. Springer Verlag (Germany) 2023-03 Article PeerReviewed Kumari, Sneha and Roy, Toushali and Chakladar, Saswati and Kumar, Alok and Arif, Md. and Mohanty, Ashok and Kundu, Rajen and Chakravarty, Sanchita (2023) Distribution, mode of occurrence, and significance of rare-earth elements in coal from Samaleswari open cast coal blocks, Odisha, India with their provenance and paleodepositional environment. Environmental Earth Sciences, 82 (5). ISSN 1866-6280, DOI https://doi.org/10.1007/s12665-023-10777-7 <https://doi.org/10.1007/s12665-023-10777-7>. 10.1007/s12665-023-10777-7
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
spellingShingle Q Science (General)
Kumari, Sneha
Roy, Toushali
Chakladar, Saswati
Kumar, Alok
Arif, Md.
Mohanty, Ashok
Kundu, Rajen
Chakravarty, Sanchita
Distribution, mode of occurrence, and significance of rare-earth elements in coal from Samaleswari open cast coal blocks, Odisha, India with their provenance and paleodepositional environment
description This study aims to thoroughly examine the distribution, concentration, and occurrence of a broad selection of REEs and major elements in coal samples from Samaleswari coal block, IB valley, Odisha, India using advanced geochemical tools. A total of 85 coal samples from four boreholes were characterized using proximate analysis and calorific value measurements. The corresponding ash samples were examined using X-ray Diffraction (XRD), X-ray Fluorescence (XRF), Electron Probe Microanalyzer (EPMA), and Inductively Coupled Plasma Mass Spectrometry (ICP-MS).The coal ash samples were delineated to be rich in SiO2 (42-65%) along with a lower proportion of Al2O3 (24-41%), Fe2O3 (5-6%), and TiO2 (1-2%). The average concentration of REEs in the four boreholes was found to be 510 ppm, with the distribution pattern being Ce > La > Nd > Y > Pr > Sc > Sm > Gd > Dy > Er > Yb > Eu > Ho > Tb > Tm > Lu. The concentration of critical REEs varied in the range of 100-300 ppm, and outlook coefficient (C-outl) ranged from 0.7 to 1.0, demonstrating our coal seams' suitability as a promising source of REEs. A higher concentration of REEs in BH1 was correlated with a relatively higher proportion of apatite. The increment in REE concentration with depth was speculated to be due to their close association with hematite, especially in BH1 and BH2. A strong positive correlation of all the REEs with clay minerals and specifically TiO2 reinstates their abundance in fine-grained clastic sedimentary rocks which are not significantly affected by weathering. Point analysis using EPMA and Scanning Electron Microscope-Energy Dispersive Analysis X-ray (SEM-EDAX) confirmed the co-existence of La, Ce, Pr, and Nd in the Fe-containing aluminosilicate matrix. In addition, the major oxide ratio and their plot entail terrestrial depositional environment in the basin during coal formation and deposited in semi-arid climatic conditions.
format Article
author Kumari, Sneha
Roy, Toushali
Chakladar, Saswati
Kumar, Alok
Arif, Md.
Mohanty, Ashok
Kundu, Rajen
Chakravarty, Sanchita
author_facet Kumari, Sneha
Roy, Toushali
Chakladar, Saswati
Kumar, Alok
Arif, Md.
Mohanty, Ashok
Kundu, Rajen
Chakravarty, Sanchita
author_sort Kumari, Sneha
title Distribution, mode of occurrence, and significance of rare-earth elements in coal from Samaleswari open cast coal blocks, Odisha, India with their provenance and paleodepositional environment
title_short Distribution, mode of occurrence, and significance of rare-earth elements in coal from Samaleswari open cast coal blocks, Odisha, India with their provenance and paleodepositional environment
title_full Distribution, mode of occurrence, and significance of rare-earth elements in coal from Samaleswari open cast coal blocks, Odisha, India with their provenance and paleodepositional environment
title_fullStr Distribution, mode of occurrence, and significance of rare-earth elements in coal from Samaleswari open cast coal blocks, Odisha, India with their provenance and paleodepositional environment
title_full_unstemmed Distribution, mode of occurrence, and significance of rare-earth elements in coal from Samaleswari open cast coal blocks, Odisha, India with their provenance and paleodepositional environment
title_sort distribution, mode of occurrence, and significance of rare-earth elements in coal from samaleswari open cast coal blocks, odisha, india with their provenance and paleodepositional environment
publisher Springer Verlag (Germany)
publishDate 2023
url http://eprints.um.edu.my/38516/
_version_ 1783876667270234112
score 13.23648

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