Texture and Microstructural Analysis of Crystalline Solids, Volume II

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Crystallography and Physical Chemistry of Minerals & Nanominerals".

Deadline for manuscript submissions: 15 June 2024 | Viewed by 357

Special Issue Editor


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Guest Editor
Departamento de Geología, Universidad de Salamanca, 37008 Salamanca, Spain
Interests: structural geology; texture; microstructure; anysotropy; EBSD; neutron diffraction; synchrotron; TEM; deformation mechanisms; shear zones; recrystallization
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Special Issue Information

Dear Colleagues,

Microstructure and crystallographic preferred orientation (texture) have been revealed as key features to understand the genesis and evolution of natural and man-made crystalline solids. Non-random spatial distribution of minerals and their orientations in an aggregate commonly result in anisotropy of physical and chemical properties. The research on natural and experimentally deformed rock-forming and ore minerals during the last twenty years has revealed prime information about deformation mechanisms and their operative conditions, which improved our knowledge on geodynamics and the development of natural resources. On other hand, a strong connection exists between texture/microstructure and properties of mineralized tissues in living and fossil organisms. This has been used to explore life evolution and design new materials. The application of advanced quantitative techniques like neutron, X-ray diffraction, and particularly EBSD has become very popular. All these techniques have merged as an extraordinary opportunity to puzzle out microevolution of crystalline aggregates. Real 3D microstructural information can be obtained with microtomography, which, for instance, improves the understanding of ore genesis and constrains parameters required for mineral or metallurgical processing. Texture and microstructure modeling (e.g. VPSC, FF-VPSC, ELLE, etc.) are quickly evolving to face paramount challenges on polycrystal plasticity. This Special Issue aims to publish review papers on seminal topics (methods and applications), as well as appropriate examples of texture and microstructure analysis of rocks, ore-minerals and biominerals. Papers providing experimental data and modeling to explore texture/microstructure and growth/deformation/recrystallization mechanisms are also welcome.

Dr. Juan Gómez-Barreiro
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Minerals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • texture
  • microstructure
  • anysotropy
  • ore minerals
  • EBSD
  • neutron diffraction
  • synchrotron
  • SEM-TEM
  • deformation mechanisms
  • CPO
  • shear zones
  • gold
  • recrystallization
  • VPSC
  • biominerals

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Published Papers (1 paper)

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Research

26 pages, 19996 KiB  
Article
The Microdeformation Fabric of Amphibole-Rich Peridotite in the Southern Mariana Trench and Its Influence on Seismic Anisotropy
by Jingbo Li and Zhenmin Jin
Minerals 2024, 14(6), 577; https://doi.org/10.3390/min14060577 - 30 May 2024
Abstract
Olivine, the most abundant mineral in the upper mantle, exhibits elastic anisotropy. Understanding the seismic anisotropy and flow patterns in the upper mantle hinges on the crystallographic preferred orientation (CPO) of olivine. Similarly, hydrous minerals, which also display elastic anisotropy, play a crucial [...] Read more.
Olivine, the most abundant mineral in the upper mantle, exhibits elastic anisotropy. Understanding the seismic anisotropy and flow patterns in the upper mantle hinges on the crystallographic preferred orientation (CPO) of olivine. Similarly, hydrous minerals, which also display elastic anisotropy, play a crucial role in explaining seismic anisotropy in numerous subduction zones. High-temperature and -pressure simple shear experiments reveal that the CPO of amphibole can lead to significant seismic anisotropy. In this study, peridotite samples originating from the southern end of the Mariana Trench, commonly containing amphibole, were analyzed. The microdeformation fabric and seismic anisotropy were examined. The results indicate a weak fabric strength in olivine, yet identifiable deformation fabrics of A/D, D, and AG were observed. Various dislocation structures suggest that olivine experiences complex deformation across various temperatures. Not only can the original slip system transform, but the melt/fluid resulting from melting also has a substantial impact on the peridotite. Deformation precedes the melt/rock interaction, resulting in a strong melt/rock reaction under near-static conditions. Furthermore, the modal content of amphibole significantly alters the seismic anisotropy of peridotite. An increase in amphibole content (types I, III, and IV) enhances seismic anisotropy, particularly for type I amphibole. Notably, the presence of type I fabric amphibole promotes the Vs1 polarization direction parallel to the trench in subduction zones, a phenomenon observed in other subduction zones. Therefore, when considering mantle peridotite regions rich in amphibole, the impact of amphibole on seismic anisotropy must be accounted for. Full article
(This article belongs to the Special Issue Texture and Microstructural Analysis of Crystalline Solids, Volume II)
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