Mineralogical Study of Xenoliths (Buchite)in Young Volcanoes of Stromboli (Italy)

There are fragments of xenoliths in basaltic rocks of young volcanoes from Stromboli (Italy). They are oordierite bearing bUChite, having white colours and are in various sizes. The biggest fragment is around 20 chr('39')-"In long. The main minerals are cordierite. Around eithy percent of rocks composed of cordieritc and 20% consist of tridymite, hypersthene, sanidine and glass. Microscopic studies shows that the texture is granoblastic and mosaic. The mineral paragenesis and chemical composition indicated that the original rock were aluminum - rich and bauKitc - rich shales. The cordierite are the Mgrich cordierite. Xenoliths mctamophosed by sanidinitefacies.