Layer charge of expandable 2:1 phyllosilicates in selected parent materials of some Canadian soils
We investigated the nature of the layer charge of the different expandable 2:1 phyllosilicates present in glacial till, marine sediment, beach sand, loess, weathered sandstone and acid shale parent materials of selected soils from the arctic, alpine and interior plateau regions of Canada. Detailed c...
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Canadian Science Publishing
1994
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crcansciencepubl:10.4141/cjss94-041 2023-12-17T10:26:15+01:00 Layer charge of expandable 2:1 phyllosilicates in selected parent materials of some Canadian soils Arocena, J. M. Pawluk, S. Dudas, M. J. 1994 http://dx.doi.org/10.4141/cjss94-041 http://www.nrcresearchpress.com/doi/pdf/10.4141/cjss94-041 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Soil Science volume 74, issue 3, page 291-299 ISSN 0008-4271 1918-1841 Soil Science journal-article 1994 crcansciencepubl https://doi.org/10.4141/cjss94-041 2023-11-19T13:39:32Z We investigated the nature of the layer charge of the different expandable 2:1 phyllosilicates present in glacial till, marine sediment, beach sand, loess, weathered sandstone and acid shale parent materials of selected soils from the arctic, alpine and interior plateau regions of Canada. Detailed characterization of 2:1 clay minerals, using the layer charge, was done by intercalation of the clay fractions with different chains (n c = 6 to 18) of n-alkylammonium cations (AC).Results indicated that AC were able to detect a mixture of smectite and vermiculite that was not detected by previous studies, using the glycerol (GLY) and ethylene glycol (EG) solvation techniques. The mean unit cell layer charge [in mol(+)/Si,Al) 4 O 10 )] varies from 0.30 to 0.39 for the smectite and from 0.71 to 0.74 for vermiculite. Vermiculite from the beach sand is trioctahedral in which most of the charge is located in the tetrahedral sheet, while vermiculite in the weathered sandstone is dioctahedral in which part of the charge originates from the octahedral layers. The presence of smectite, associated with the weathering of chlorite and an expanding component associated with the degradation of biotite, was also observed. Key words:n-alkylammonium cations, mean layer charge, 2:1 phyllosilicates Article in Journal/Newspaper Arctic Canadian Science Publishing (via Crossref) Arctic Canada Canadian Journal of Soil Science 74 3 291 299 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
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crcansciencepubl |
language |
English |
topic |
Soil Science |
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Soil Science Arocena, J. M. Pawluk, S. Dudas, M. J. Layer charge of expandable 2:1 phyllosilicates in selected parent materials of some Canadian soils |
topic_facet |
Soil Science |
description |
We investigated the nature of the layer charge of the different expandable 2:1 phyllosilicates present in glacial till, marine sediment, beach sand, loess, weathered sandstone and acid shale parent materials of selected soils from the arctic, alpine and interior plateau regions of Canada. Detailed characterization of 2:1 clay minerals, using the layer charge, was done by intercalation of the clay fractions with different chains (n c = 6 to 18) of n-alkylammonium cations (AC).Results indicated that AC were able to detect a mixture of smectite and vermiculite that was not detected by previous studies, using the glycerol (GLY) and ethylene glycol (EG) solvation techniques. The mean unit cell layer charge [in mol(+)/Si,Al) 4 O 10 )] varies from 0.30 to 0.39 for the smectite and from 0.71 to 0.74 for vermiculite. Vermiculite from the beach sand is trioctahedral in which most of the charge is located in the tetrahedral sheet, while vermiculite in the weathered sandstone is dioctahedral in which part of the charge originates from the octahedral layers. The presence of smectite, associated with the weathering of chlorite and an expanding component associated with the degradation of biotite, was also observed. Key words:n-alkylammonium cations, mean layer charge, 2:1 phyllosilicates |
format |
Article in Journal/Newspaper |
author |
Arocena, J. M. Pawluk, S. Dudas, M. J. |
author_facet |
Arocena, J. M. Pawluk, S. Dudas, M. J. |
author_sort |
Arocena, J. M. |
title |
Layer charge of expandable 2:1 phyllosilicates in selected parent materials of some Canadian soils |
title_short |
Layer charge of expandable 2:1 phyllosilicates in selected parent materials of some Canadian soils |
title_full |
Layer charge of expandable 2:1 phyllosilicates in selected parent materials of some Canadian soils |
title_fullStr |
Layer charge of expandable 2:1 phyllosilicates in selected parent materials of some Canadian soils |
title_full_unstemmed |
Layer charge of expandable 2:1 phyllosilicates in selected parent materials of some Canadian soils |
title_sort |
layer charge of expandable 2:1 phyllosilicates in selected parent materials of some canadian soils |
publisher |
Canadian Science Publishing |
publishDate |
1994 |
url |
http://dx.doi.org/10.4141/cjss94-041 http://www.nrcresearchpress.com/doi/pdf/10.4141/cjss94-041 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Canadian Journal of Soil Science volume 74, issue 3, page 291-299 ISSN 0008-4271 1918-1841 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.4141/cjss94-041 |
container_title |
Canadian Journal of Soil Science |
container_volume |
74 |
container_issue |
3 |
container_start_page |
291 |
op_container_end_page |
299 |
_version_ |
1785577975092084736 |