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The late stage magma activities of lunar mainly happened at the west mare (Oceanus Procellarum and Mare Imbrium).Meanwhile the high-Fe-Ti mare basalts are the key to understand lunar evolution during the last stage.Although there were a lot of researches in the past, considering the limit of data performance, some basic scientific questions about the mare basalts have not been solved.Previous researches usually extracted spectra from the large craters (diameter about 1000 m) to analyze spectra features.