THE GEOFLUID IN THE MANTLE AND ITS ROLE IN ORE-FORMING PROCESSES

Studies of geofluids in the Earth's mantle (or mantle geofluids) and their roles in ore\|forming processes have become one of the most interesting researches for geoscientists in the world The geofluids in the mantle are composed mainly of CO 2 and H 2 O, and also some amount of solutes, which are enriched in large ion lithophile elements, and have large potential to dissolve and transport elements because of their supercritical behaviors It has been proved that the mantle geofluids can play an important role in formation especially of large or super\|large metal or nonmetal ore deposits, mainly through providing and/or transporting ore\|forming materials The geofluid\|involved ore\|formation processes have their own characteristics, such as deep fault\|related geotectonic background, having a close relationship with mantle\|derived magmatism and mantle\|derived ore\|forming materials, and often forming large or super\|large ore deposits