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Title: Liebermannite, KA lSi 3 O 8 , a new shock‐metamorphic, high‐pressure mineral from the Zagami Martian meteorite
Abstract

In this paper, we discuss the occurrence of liebermannite (IMA2013‐128),KAlSi3O8, a new, shock‐generated, high‐pressure tetragonal hollandite‐type structure silicate mineral, in the Zagami basaltic shergottite meteorite. Liebermannite crystallizes in space groupI4/mwithZ = 2, cell dimensions of= 9.15 ± 0.14 (1σ) Å,= 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.

 
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NSF-PAR ID:
10045983
Author(s) / Creator(s):
 ;  ;  ;  ;  ;  ;  ;  
Publisher / Repository:
Wiley-Blackwell
Date Published:
Journal Name:
Meteoritics & Planetary Science
Volume:
53
Issue:
1
ISSN:
1086-9379
Page Range / eLocation ID:
p. 50-61
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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