Affordable Access

What Lurks in the Martian Rocks and Soil? Investigations of Sulfates, Phosphates, and Perchlorates. Spectral properties of Ca-sulfates: Gypsum, bassanite, and anhydrite

Authors
Type
Published Article
Journal
American Mineralogist
Publisher
Mineralogical Society of America
Publication Date
Sep 30, 2014
Volume
99
Issue
10
Pages
2105–2115
Source
SETI Institute
License
Unknown

Abstract

This study of the spectral properties of Ca-sulfates was initiated to support remote detection of these minerals on Mars. Gypsum, bassanite, and anhydrite are the currently known forms of Ca-sulfates. They are typically found in sedimentary evaporites on Earth, but can also form via reaction of acidic fluids associated with volcanic activity. Reflectance, emission, transmittance, and Raman spectra are discussed here for various sample forms. Gypsum and bassanite spectra exhibit characteristic and distinct triplet bands near 1.4-1.5 ...

Report this publication

Statistics

Seen <100 times