{rfName}
Cr

Indexed in

License and use

Icono OpenAccess

Citations

145

Altmetrics

Analysis of institutional authors

Alvarez Gonzalez, Ana MariaAuthor

Share

February 21, 2020
Publications
>
Article
Sí

Crystallochemical characterization of the palygorskite and sepiolite from the Allou Kagne deposit, Senegal

Publicated to:CLAYS AND CLAY MINERALS. 55 (6): 606-617 - 2007-12-01 55(6), DOI: 10.1346/CCMN.2007.0550608

Authors: García-Romero E; Suárez M; Santarén J; Alvarez A

Affiliations

TOLSA Ctra. Vallecas-Mejorada del Campo - Author
Universidad Complutense de Madrid - Author
Universidad de Salamanca - Author

Abstract

The Allou Kagne (Senegal) deposit consists of different proportions of palygorskite and sepiolite, and these are associated with small quantities of quartz and X-ray amorphous silica as impurities. No pure palygorskite or sepiolite has been recognized by X-ray diffraction. Textural and microtextural features indicate that fibrous clay minerals of the Allou Kagne deposit were formed by direct precipitation from solution. Crystal-chemistry data obtained by analytical/transmission electron microscopy (AEM/TEM) analyses of isolated fibers show that the chemical composition of the particles varies over a wide range, from a composition corresponding to palygorskite to a composition intermediate between that of sepiolite and palygorskite, but particles with a composition corresponding to sepiolite have not been found. Taking into account the results from selected area electron diffraction and AEM-TEM, fibers of pure palygorskite and sepiolite have been found but it cannot be confirmed that all of the particles analyzed correspond to pure palygorskite or pure sepiolite because both minerals can occur together at the crystallite scale. In addition, the presence of Mg-rich palygorskite and very Al-rich sepiolite can be deduced. It is infrequent in nature that palygorskite and sepiolite appear together because the conditions for simultaneous formation of the two minerals are very restricted. The chemical composition of the solution controls the formation of the Allou Kagne sepiolite and palygorskite. The wide compositional variation appears as a consequence of temporary variations of the chemical composition of the solution. Copyright © 2007, The Clay Minerals Society.

Keywords

Aem-temAllou-kagne depositsCrystal chemistryPalygorskiteSaedSenegalSepiolite

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal CLAYS AND CLAY MINERALS due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2007, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Water Science and Technology.

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 4.5, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions Sep 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-09-20, the following number of citations:

  • WoS: 40
  • Scopus: 47
  • Google Scholar: 56

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-09-20:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 30 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.