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METAMORPHIC fluids, an important type of the ore-forming fluids within the Earth’ s crust, are the necessary materials for metamorphic hydrothermal ore formation. Their direct products are varieties of synmetamorphic veins occurring in metamorphic rocks’. Studies on the genesis of these veins can be availablefor investigating the source material and formation processes of metamorphic hydrothermal deposit. Previous studies on metamorphic veins have focused mainly on their mineralogical, major elemental and oxygenisotopic compositions, and two different hypotheses have been advanced to account for metamorphicvein genesis. In this paper, we use rare-earth elemental method, together with field geological andpetrologic studies, to inquire into the origin of synmetamorphic veins occurring in Xingzi Group ofLushan, southeast China.
METAMORPHIC fluids, an important type of the ore-forming fluids within the Earth ’s crust, are the necessary materials for metamorphic hydrothermal ore formation. Their direct products are varieties of synmetamorphic veins occurring in metamorphic rocks’. Studies on the genesis of these veins can be available for investigating the source material and formation processes of metamorphic hydrothermal deposit. Previous studies on metamorphic veins have focused mainly on their mineralogical, major elemental and oxygenisotopic compositions, and two different hypotheses have been advanced to account for metamorphicvein genesis. In this paper, we use rare-earth elemental method, together with field geological and petrologic studies, to inquire into the origin of synmetamorphic veins occurring in Xingzi Group of Countries, southeast China.