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Mars Geochemical Instrument (MarGI): An instrument for the analysis of the Martian surface and the search for evidence of lifeThe Mars Geochemical Instrument, MarGI, was developed to provide a comprehensive analysis of the rocks and surface material on Mars. The instrument combines Differential Thermal Analysis (DTA) with miniature Gas Chromatography-Ion Mobility Spectrometry (GC-IMS) to identify minerals, the presence and state of water, and organic compounds. Miniature pyrolysis ovens are used to both, conduct DTA analysis of soil or crushed rocks samples, and pyrolyze the samples at temperatures up to 1000 degrees C for GC-IMS analysis of the released gases. This combination of analytical processes and techniques, which can characterize the mineralogy of the rocks and soil, and identify and quantify volatiles released during pyrolysis, has applications across a wide range of target sites including comets, planets, asteroids, and moons such as Titan and Europa. The MarGI analytical approach evolved from the Cometary Ice and Dust Experiment (CIDEX) selected to fly on the Comet Rendezvous Asteroid Flyby Mission (CRAF).
Document ID
Document Type
Conference Paper
Kojiro, Daniel R. (NASA Ames Research Center Moffett Field, CA, United States)
Mancinelli, Rocco (Search for Extraterrestrial Intelligence Inst. Moffett Field, CA, United States)
Martin, Joe (Equinox Interscience, Inc.)
Holland, Paul M. (Thorleaf Research, Inc. Santa Barbara, CA, United States)
Stimac, Robert M. (Ion Applications, Inc. Lake Worth, FL, United States)
Kaye, William J. (Ion Applications, Inc. Lake Worth, FL, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2005
Subject Category
Lunar and Planetary Science and Exploration
Meeting Information
229th American Chemical Society National Meeting(San Diego, CA)
Distribution Limits
Work of the US Gov. Public Use Permitted.