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Title: Structure Analysis of Natural Wangdaodeite—LiNbO3-Type FeTiO3

Abstract

This paper reports the first structure refinement of natural wangdaodeite, LiNbO3-type FeTiO3 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-1 is indicative for this phase, whereas other features in type-wangdaodeite are tentatively assigned to disordered ilmenite.

Authors:
 [1]; ORCiD logo [2];  [3];  [3]
  1. Univ. of Nevada, Las Vegas, NV (United States)
  2. California Institute of Technology (CalTech), Pasadena, CA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
USDOE
OSTI Identifier:
1734921
Resource Type:
Accepted Manuscript
Journal Name:
Minerals
Additional Journal Information:
Journal Volume: 10; Journal Issue: 12; Journal ID: ISSN 2075-163X
Publisher:
MDPI
Country of Publication:
United States
Language:
ENGLISH
Subject:
58 GEOSCIENCES

Citation Formats

Tschauner, Oliver, Ma, Chi, Newville, Matthew G., and Lanzirotti, Antonio. Structure Analysis of Natural Wangdaodeite—LiNbO3-Type FeTiO3. United States: N. p., 2020. Web. https://doi.org/10.3390/min10121072.
Tschauner, Oliver, Ma, Chi, Newville, Matthew G., & Lanzirotti, Antonio. Structure Analysis of Natural Wangdaodeite—LiNbO3-Type FeTiO3. United States. https://doi.org/10.3390/min10121072
Tschauner, Oliver, Ma, Chi, Newville, Matthew G., and Lanzirotti, Antonio. Mon . "Structure Analysis of Natural Wangdaodeite—LiNbO3-Type FeTiO3". United States. https://doi.org/10.3390/min10121072. https://www.osti.gov/servlets/purl/1734921.
@article{osti_1734921,
title = {Structure Analysis of Natural Wangdaodeite—LiNbO3-Type FeTiO3},
author = {Tschauner, Oliver and Ma, Chi and Newville, Matthew G. and Lanzirotti, Antonio},
abstractNote = {This paper reports the first structure refinement of natural wangdaodeite, LiNbO3-type FeTiO3 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-1 is indicative for this phase, whereas other features in type-wangdaodeite are tentatively assigned to disordered ilmenite.},
doi = {10.3390/min10121072},
journal = {Minerals},
number = 12,
volume = 10,
place = {United States},
year = {2020},
month = {11}
}

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