Liebermannite, Kalsi3o8, A New Shock-metamorphic, High-pressure Mineral From The Zagami Martian Meteorite

Authors

C Ma, California Institute of TechnologyFollow
O Tschauner, University of Nevada, Las VegasFollow
J R. Beckett, California Institute of Technology
G R. Rossman, California Institute of TechnologyFollow
C Prescher, University of Chicago
V B. Prakapenka, University of ChicagoFollow
H A. Bechtel, Lawrence Berkeley National Laboratory
A MacDowell, Lawrence Berkeley National Laboratory

Document Type

Article

Publication Date

1-1-2018

Publication Title

Meteoritics and Planetary Science

Publisher

University of Arkansas

Volume

53

Issue

1

First page number:

50

Last page number:

61

Abstract

In this paper, we discuss the occurrence of liebermannite (IMA 2013-128), KAlSi3O8, 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 Å3 (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. © The Meteoritical Society, 2017.

Language

English

Repository Citation

Ma, C., Tschauner, O., Beckett, J. R., Rossman, G. R., Prescher, C., Prakapenka, V. B., Bechtel, H. A., MacDowell, A. (2018). Liebermannite, Kalsi3o8, A New Shock-metamorphic, High-pressure Mineral From The Zagami Martian Meteorite. Meteoritics and Planetary Science, 53(1), 50-61. University of Arkansas.
http://dx.doi.org/10.1111/maps.13000