 Searches for thermal signatures and surface changes within the last decade have not yielded evidence for active volcanism.On October 17, 2012, the "Curiosity rover" on the planet Mars at "Rocknest" performed the first X-ray diffraction analysis of Martian soil.The results from the rover's CheMin analyzer revealed the presence of several minerals, including feldspar, pyroxenes and olivine, and suggested that the Martian soil in the sample was similar to the "weathered basaltic soils" of Hawaiian volcanoes.