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The X-ray diffraction/X-ray fluorescence instrument CheMin on the Curiosity rover is a shoebox-sized device using transmission geometry and an energy-discriminating CCD detector. The instrument has returned the first X-ray diffraction data for soil and drilled samples from Mars outcrops, revealing a suite of primary basaltic minerals, amorphous components and varied hydrous alteration products including phyllosilicates.

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This page is a summary of: The first X-ray diffraction measurements on Mars, IUCrJ, October 2014, International Union of Crystallography,
DOI: 10.1107/s2052252514021150.
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