Please use this identifier to cite or link to this item:
http://doi.org/10.25358/openscience-8846
Authors: | Götz, Emilia Kleebe, Hans-Joachim Kolb, Ute |
Title: | The hierarchical internal structure of labradorite |
Online publication date: | 13-Apr-2023 |
Year of first publication: | 2022 |
Language: | english |
Abstract: | The different structural features of labradorite and its incommensurate atomic structure have long been in the eye of science. In this transmission electron microscopy (TEM) study, all of the structural properties of labradorite could be investigated on a single crystal with an anorthite–albite–orthoclase composition of An53:4Ab41:5Or5:1. The various properties of labradorite could thus be visualized and connected to form a hierarchical structure. Both albite and pericline twins occur in the labradorite. The size of alternating Ca-rich and Ca-poor lamellae could be measured and linked to the composition and the color of labradorescence. Furthermore, a modulation vector of 0.0580(15)a C0.0453(33)b 0.1888(28)c with a period of 3.23 nm was determined. The results indicate an e labradorite structure, which was achieved by forming Ca-rich and Capoor lamellae. The average structure and subsequently the incommensurate crystal structure were solved with a three-dimensional electron diffraction (3DED) data set acquired with automated diffraction tomography (ADT) from a single lamella. The results are in good agreement with the structure solved by X-ray diffraction and demonstrate that 3DED–ADT is suitable for solving even incommensurate structures. |
DDC: | 540 Chemie 540 Chemistry and allied sciences 550 Geowissenschaften 550 Earth sciences |
Institution: | Johannes Gutenberg-Universität Mainz |
Department: | FB 09 Chemie, Pharmazie u. Geowissensch. |
Place: | Mainz |
ROR: | https://ror.org/023b0x485 |
DOI: | http://doi.org/10.25358/openscience-8846 |
Version: | Published version |
Publication type: | Zeitschriftenaufsatz |
Document type specification: | Scientific article |
License: | CC BY |
Information on rights of use: | https://creativecommons.org/licenses/by/4.0/ |
Journal: | European Journal of Mineralogy 34 5 |
Pages or article number: | 393 410 |
Publisher: | Copernicus Publications |
Publisher place: | Göttingen |
Issue date: | 2022 |
ISSN: | 1617-4011 |
Publisher DOI: | 10.5194/ejm-34-393-2022 |
Appears in collections: | DFG-491381577-G |
Files in This Item:
File | Description | Size | Format | ||
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the_hierarchical_internal_str-20230223094848766.pdf | 14.11 MB | Adobe PDF | View/Open | ||
the_hierarchical_internal_str-20230223094908772.pdf | 1.01 MB | Adobe PDF | View/Open |