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Permanent link (DOI): https://doi.org/10.7939/R3RQ19

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Jarosite Occurrences in the MIL 03346 Nakhlite: Implications for Water on Mars Open Access

Descriptions

Other title
Subject/Keyword
jarosite
nakhlite
MIL 03346
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Hong, Jason K
Supervisor and department
Herd, Christopher (Earth and Atmospheric Sciences)
Examining committee member and department
Cavell, Ronald (Chemistry)
Gleeson, Sarah (Earth and Atmospheric Sciences)
Department
Department of Earth and Atmospheric Sciences
Specialization

Date accepted
2012-04-02T10:43:46Z
Graduation date
2012-06
Degree
Master of Science
Degree level
Master's
Abstract
The recent discovery of the mineral jarosite (KFe3(OH)6(SO4)2) in the MIL 03346 martian meteorite is important because jarosite forms from acidic, oxidizing waters. Jarosite occurrences in the MIL 03346 martian meteorite were studied to characterize the mineral in-situ. Backscattered electron images and X-ray maps reveal distinct areas of jarosite occurrences in both the mesostasis and in veins cutting cumulate augite grains. Areas of alteration range from a few microns to 100 microns in length. Quantitative analyses indicate significant amounts of hydronium substitution and chemical compositions consistent with terrestrial jarosites. Synchrotron XRF was not able to determine an origin for the jarosite due to various issues involving the beam spot size and detection limits. Hydrogen isotopic analyses indicate a terrestrial origin for the jarosite, most likely a result of Antarctic weathering processes. The methods used in this study show that not all jarosite occurrences in MIL 03346 are martian in origin.
Language
English
DOI
doi:10.7939/R3RQ19
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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