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Natural Fe-bearing oxides and sulfates from the Rio Tinto Mars analog site: Critical assessment of VNIR reflectance spectroscopy, laser Raman spectroscopy, and XRD as mineral identification tools

Authors
Type
Published Article
Journal
American Mineralogist
Publisher
Mineralogical Society of America
Publication Date
Jun 30, 2014
Volume
99
Issue
7
Pages
1199–1205
Source
SETI Institute
License
Unknown

Abstract

We have characterized complex iron-and sulfate-bearing samples from Rio Tinto (Spain) using X‑ray diffraction (XRD), visible-near infrared reflectance (VNIR) spectroscopy, and laser Raman spectroscopy (LRS). Samples were collected for this study from the Peña de Hierro region of Rio Tinto because this site represents a natural acidic environment that is a potential analog for such environments on Mars. We report an evaluation of the capabilities of these three techniques in performing detailed mineralogical ...

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