... location named "Buckskin,” the results revealed a surprising constituent; significant amounts of a silica mineral called tridymite. Tridymite is generally associated with silicic volcanism, an explosive type of volcanism that on Earth can cover vast...
... determined by the rover’s CheMin X-Ray diffractometer, is the mineral tridymite. A team led by Dr Richard Morris at the NASA Johnson ...Space Center concluded that the presence of tridymite was evidence of eruptions from volcanoes like Earth’s...