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Published August 2016 | Accepted Version
Book Section - Chapter Open

Using VSWIR Microimaging Spectroscopy to Explore the Mineralogical Diversity of HED Meteorites

Abstract

We use VSWIR microimaging spectroscopy to survey the spectral diversity of HED meteorites at 80-μm/pixel spatial scale. Our goal in this work is both to explore the emerging capabilities of microimaging VSWIR spectroscopy and to contribute to understanding the petrologic diversity of the HED suite and the evolution of Vesta. Using a combination of manual and automated hyperspectral classification techniques, we identify four major classes of materials based on VSWIR absorptions that include pyroxene, olivine, Fe-bearing feldspars, and glass-bearing/featureless materials. Results show microimaging spectroscopy is an effective method for rapidly and non-destructively characterizing small compositional variations of meteorite samples and for locating rare phases for possible follow-up investigation. Future work will include incorporating SEM/EDS results to quantify sources of spectral variability and placing observations within a broader geologic framework of the differentiation and evolution of Vesta.

Additional Information

© 2016 IEEE. The research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. © 2016. All rights reserved. Thanks to a JPL RTD grant to A.A.F. and a JPL PDF/RTD program grant to B.L.E. and D. Blaney for partial support of this work and to G. Rossman for providing samples.

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