Publication
Fe-K XANES and HR-TEM analyses of Apollo lunar grain space weathered surfaces
Authors:
Leon
Hicks
(University of Leicester)
,
John
Bridges
(University of Leicester)
,
Takaaki
Noguchi
(Kyushu University)
,
Jack
Piercy
(University of Leicester)
Co-authored by industrial partner:
No
Type:
Conference Paper
Conference:
14th Europlanet Science Congress 2020
Peer Reviewed:
No
State:
Published (Approved)
Published:
September 2020
Abstract: Space weathering due to the bombardment of electrons and solar wind upon the exposed lunar surface shows as an apparent spectral darkening and reddening in ground-based and lunar-orbital observations. Space weathered rims have been observed on soil surface samples, returned by the Apollo landings, featuring amorphized material and nanophase Fe metal (npFe⁰) particles formed due to the implantation of solar wind H⁺ ions reducing the host grain mineral oxides to form metal. Oxidation of these Fe particles has also been shown, and a suggested correlation between oxidation and lunar soil maturity.In this study, we investigate Fe-redox changes in the space weathered rims of Apollo 17 lunar surface soil samples, using TEM and X-ray nanoprobe Fe-K XANES.
Subject Areas:
Earth Science
Diamond Offline Facilities:
Electron Physical Sciences Imaging Centre (ePSIC)
Instruments:
E02-JEM ARM 300CF
,
I14-Hard X-ray Nanoprobe
Added On:
15/12/2020 10:12
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