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White Rock from Mars Reconnaissance Orbiter CRISM

White Rock from Mars Reconnaissance Orbiter CRISM
White Rock from Mars Reconnaissance Orbiter CRISM An infrared false color view of White Rock (left) shows that the feature is reddish in color, the same as Martian dust, while the crater floor it sits in is darker and bluer. The right-hand image shows the signatures of different minerals that are present. According to the CRISM team, "CRISM found that White Rock is composed of accumulated dust perhaps with some fine-grained olivine (an igneous mineral), surrounded by basaltic sand containing olivine and dark-colored pyroxene. White Rock still appears not to contain evaporite, but instead to be composed of accumulated dust and sand." NASA / JPL-Caltech / JHUAPL / ASU