云南滇滩大平地铁矿床某些地球化学特征的初步研究

Reorted in the present paper are some preliminary results of the studies on the petrochemistry and mineral compositions of various skarn zones in the Dapingdi iron deposit,the chemical compositions of iron ore and magnetite,and trace elements,sulfur isotopic compositions and F contents of skarns and iron ore.On the hasis of these data the authors have discussed the possibie relations between skarnization and the formation of iron ore.Moreover,the principal factors controlling skarnization and related mineralization are also discussed.It is suggested that skarnization and related mineralization are mainly controlled by the chemical composition,temperature,and pH and Eh of ore solutions.Pressure can only play a little role although it should be taken into consideration.