Robin Hood - Sol 365

ChemCam RMI mosaic of the target "Robin Hood", seen during the traverse between Twin Cairn Island Ridge and Darwin. This rock is unusual for the Gale Crater area, as it appears to be igneous in origin.

ChemCam observations showed that the large, elongated crystals are feldspars containing mostly sodium with a little bit of calcium. According to ChemCam spectra, this rock is a trachyte-andesite.

Small pebbles and cobbles of similar material are present inside conglomerates in Gale Crater, implying that they have been carried here by erosion in the regions surrounding Gale Crater. Closer study of these types of rocks can tell more about the Martian crust outside of Gale.

Image Credit: NASA / JPL / LANL / MSSS / Justin Cowart

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