Autoren:	Götz, Emilia Kleebe, Hans-Joachim Kolb, Ute
Titel:	The hierarchical internal structure of labradorite
Online-Publikationsdatum:	13-Apr-2023
Erscheinungsdatum:	2022
Sprache des Dokuments:	Englisch
Zusammenfassung/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-Sachgruppe:	540 Chemie 540 Chemistry and allied sciences 550 Geowissenschaften 550 Earth sciences
Veröffentlichende Institution:	Johannes Gutenberg-Universität Mainz
Organisationseinheit:	FB 09 Chemie, Pharmazie u. Geowissensch.
Veröffentlichungsort:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-8846
Version:	Published version
Publikationstyp:	Zeitschriftenaufsatz
Weitere Angaben zur Dokumentart:	Scientific article
Nutzungsrechte:	CC BY
Informationen zu den Nutzungsrechten:	https://creativecommons.org/licenses/by/4.0/
Zeitschrift:	European Journal of Mineralogy 34 5
Seitenzahl oder Artikelnummer:	393 410
Verlag:	Copernicus Publications
Verlagsort:	Göttingen
Erscheinungsdatum:	2022
ISSN:	1617-4011
DOI der Originalveröffentlichung:	10.5194/ejm-34-393-2022
Enthalten in den Sammlungen:	DFG-491381577-G