Structure Analysis of Natural Wangdaodeite—LiNbO<sub>3</sub>-Type FeTiO<sub>3</sub>

Structure Analysis of Natural Wangdaodeite—LiNbO<sub>3</sub>-Type FeTiO<sub>3</sub>

This paper reports the first structure refinement of natural wangdaodeite, LiNbO<sub>3</sub>-type FeTiO<sub>3</sub> from the Ries impact structure. Wangdaodeite occurs together with recrystallized ilmenite clasts in shock melt veins which have experienced peak shock pressures...

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Main Authors: Oliver Tschauner, Chi Ma, Matthew G. Newville, Antonio Lanzirotti
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Minerals
Subjects:
high-pressure mineral
LiNbO<sub>3</sub>
FeTiO<sub>3</sub>
shock-compression
Online Access:https://www.mdpi.com/2075-163X/10/12/1072
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spelling doaj-9b31bf82e9c1420493379d007edb69ef2020-12-01T00:00:50ZengMDPI AGMinerals2075-163X2020-11-01101072107210.3390/min10121072Structure Analysis of Natural Wangdaodeite—LiNbO<sub>3</sub>-Type FeTiO<sub>3</sub>Oliver Tschauner0Chi Ma1Matthew G. Newville2Antonio Lanzirotti3Department of Geoscience, University of Nevada Las Vegas, Las Vegas, NV 89154, USADivision of Geology and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USAGeoSoilEnviroCARS, Argonne National Laboratory, University of Chicago at the Advanced Photon Source, Argonne, IL 60367, USAGeoSoilEnviroCARS, Argonne National Laboratory, University of Chicago at the Advanced Photon Source, Argonne, IL 60367, USAThis paper reports the first structure refinement of natural wangdaodeite, LiNbO<sub>3</sub>-type FeTiO<sub>3</sub> from the Ries impact structure. Wangdaodeite occurs together with recrystallized ilmenite clasts in shock melt veins which have experienced peak shock pressures of between 17 and 22 GPa. Comparison of natural and synthetic wangdaodeite points toward a correlation between the distortion of ferrate- and titanate-polyhedra and the c/a ratio of the unit cell. The Raman spectrum of wangdaodeite is calculated based on the refined structure. Comparison to the reported spectrum of the type-material shows that the Raman peak at 738–740 cm<sup>−1</sup> is indicative for this phase, whereas other features in type-wangdaodeite are tentatively assigned to disordered ilmenite.https://www.mdpi.com/2075-163X/10/12/1072high-pressure mineralLiNbO<sub>3</sub>FeTiO<sub>3</sub>shock-compression
collection DOAJ
language English
format Article
sources DOAJ
author Oliver Tschauner
Chi Ma
Matthew G. Newville
Antonio Lanzirotti
spellingShingle Oliver Tschauner
Chi Ma
Matthew G. Newville
Antonio Lanzirotti
Structure Analysis of Natural Wangdaodeite—LiNbO<sub>3</sub>-Type FeTiO<sub>3</sub>
Minerals
high-pressure mineral
LiNbO<sub>3</sub>
FeTiO<sub>3</sub>
shock-compression
author_facet Oliver Tschauner
Chi Ma
Matthew G. Newville
Antonio Lanzirotti
author_sort Oliver Tschauner
title Structure Analysis of Natural Wangdaodeite—LiNbO<sub>3</sub>-Type FeTiO<sub>3</sub>
title_short Structure Analysis of Natural Wangdaodeite—LiNbO<sub>3</sub>-Type FeTiO<sub>3</sub>
title_full Structure Analysis of Natural Wangdaodeite—LiNbO<sub>3</sub>-Type FeTiO<sub>3</sub>
title_fullStr Structure Analysis of Natural Wangdaodeite—LiNbO<sub>3</sub>-Type FeTiO<sub>3</sub>
title_full_unstemmed Structure Analysis of Natural Wangdaodeite—LiNbO<sub>3</sub>-Type FeTiO<sub>3</sub>
title_sort structure analysis of natural wangdaodeite—linbo<sub>3</sub>-type fetio<sub>3</sub>
publisher MDPI AG
series Minerals
issn 2075-163X
publishDate 2020-11-01
description This paper reports the first structure refinement of natural wangdaodeite, LiNbO<sub>3</sub>-type FeTiO<sub>3</sub> from the Ries impact structure. Wangdaodeite occurs together with recrystallized ilmenite clasts in shock melt veins which have experienced peak shock pressures of between 17 and 22 GPa. Comparison of natural and synthetic wangdaodeite points toward a correlation between the distortion of ferrate- and titanate-polyhedra and the c/a ratio of the unit cell. The Raman spectrum of wangdaodeite is calculated based on the refined structure. Comparison to the reported spectrum of the type-material shows that the Raman peak at 738–740 cm<sup>−1</sup> is indicative for this phase, whereas other features in type-wangdaodeite are tentatively assigned to disordered ilmenite.
topic high-pressure mineral
LiNbO<sub>3</sub>
FeTiO<sub>3</sub>
shock-compression
url https://www.mdpi.com/2075-163X/10/12/1072
work_keys_str_mv AT olivertschauner structureanalysisofnaturalwangdaodeitelinbosub3subtypefetiosub3sub
AT chima structureanalysisofnaturalwangdaodeitelinbosub3subtypefetiosub3sub
AT matthewgnewville structureanalysisofnaturalwangdaodeitelinbosub3subtypefetiosub3sub
AT antoniolanzirotti structureanalysisofnaturalwangdaodeitelinbosub3subtypefetiosub3sub
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