Liebermannite, KAlSi_3O_8, a new shock-metamorphic, high-pressure mineral from the Zagami Martian meteorite
Abstract
In this paper, we discuss the occurrence of liebermannite (IMA 2013-128), KAlSi_3O_8, a new, shock-generated, high-pressure tetragonal hollandite-type structure silicate mineral, in the Zagami basaltic shergottite meteorite. Liebermannite crystallizes in space group I4/m with Z = 2, cell dimensions of a = 9.15 ± 0.14 (1σ) Å, c = 2.74 ± 0.13 Å, and a cell volume of 229 ± 19 Å^3 (for the type material), as revealed by synchrotron diffraction. In Zagami, liebermannite likely formed via solid-state transformation of primary igneous K-feldspar during an impact event that achieved pressures of ~20 GPa or more. The mineral name is in honor of Robert C. Liebermann, a high-pressure mineral physicist at Stony Brook University, New York, USA.
Additional Information
© 2017 The Meteoritical Society. Version of record online: 30 October 2017; Manuscript Accepted: 30 September 2017; Manuscript Received: 21 February 2017. SEM, EBSD, EPMA, and Raman measurements were carried out at the Geological and Planetary Science Division Analytical Facility at Caltech, which is supported in part by NSF grants EAR-0318518, EAR-1322082, and DMR-0080065. This work was supported in part by the National Nuclear Security Administration under the Stewardship Science Academic Alliances program through DOE Cooperative Agreement #DE-NA0001982 and DESC0005278. This work was also supported by NASA grant NNX12AJ01G. The polished thin section of Zagami used in this study was kindly provided by E. M. Stolper. Part of this work was performed at GeoSoilEnviroCARS (Sector 13), Advanced Photon Source (APS), Argonne National Laboratory. GeoSoilEnviroCARS is supported by NSF-EAR-1128799 and DE-FG02-94ER14466. The Advanced Photon Source, a DOE Office of Science User Facility, is operated by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. We gratefully acknowledge Gabriel Gwanmesia and Baosheng Li for synthetic liebermannite. We thank Erin Walton, an anonymous reviewer, and AE Wolf Uwe Reimold for their constructive reviews.Attached Files
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Additional details
- Eprint ID
- 82771
- Resolver ID
- CaltechAUTHORS:20171030-130003003
- EAR-0318518
- NSF
- EAR-1322082
- NSF
- DMR-0080065
- NSF
- National Nuclear Security Administration
- DE-NA0001982
- Department of Energy (DOE)
- DESC0005278
- Department of Energy (DOE)
- NNX12AJ01G
- NASA
- EAR-1128799
- NSF
- DE-FG02-94ER14466
- Department of Energy (DOE)
- DE-AC02-06CH11357
- Department of Energy (DOE)
- DE-AC02-05CH11231
- Department of Energy (DOE)
- Created
-
2017-10-30Created from EPrint's datestamp field
- Updated
-
2021-11-15Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences