Opaline silica in young deposits on Mars

  title={Opaline silica in young deposits on Mars},
  author={Ralph E. Milliken and Gregg Alan Swayze and Raymond E. Arvidson and Janice L. Bishop and Roger N. Clark and Bethany L. Ehlmann and Robert O. Green and John P. Grotzinger and Richard V. Morris and Scott L. Murchie and John F. Mustard and Catherine M. Weitz},
High spatial and spectral resolution refl ectance data acquired by the Mars Reconnaissance Orbiter Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) instrument reveal the presence of H2Oand SiOH-bearing phases on the Martian surface. The spectra are most consistent with opaline silica and glass altered to various degrees, confi rming predictions based on geochemical experiments and models that amorphous silica should be a common weathering product of the basaltic Martian crust. These… CONTINUE READING

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