| In recent years, people began to pay attention to the importance of mineralizer in the process of the metal elements ore-forming. Geochemical behaviors of mineralizer affect the metal elements to form deposits to some degree, and different mineralizers have its mineralization speciality to different ore-forming elements. Generally magmatic hydrothermal Cu and Au deposits enrich Cl and S, but W and Sn deposits are rich F systems.In this paper, in order to study the relationship between the Cu, W and. Cl, S, F, Tongchang porphyry copper deposit and the Dajishan tungsten deposit are selected as the studying objectives, detailed investigations have been conducted into the geological and geochemical characteristics of the granitic rock, biotite, trace element and REE geochemistry, fluid inclusion geochemistry and the partitioning coefficients of the F, Cl, Cu, W. Based on these data, the following conclusions are drawn:(1) Fluorine can reduce the viscosity and density of magma, temperature of solide-liquidus line and change the melt frame, but Cl has little effect on the melt. Chlorine tends to be partitioned into the fluid phase while fluorine shows a strong tendency to the melt phase. Df increases; with the fluorine content increasing, and so does the DCl.(2) Between the granitic melts and coexisting aqueous fluids, Cu strongly partitions toward the fluid. In contrast, W strongly partitions toward the melt. In particular Dcu linearly increases with the Cl concentration in,the fluid, indicating that Cl can transport enough copper from the melt or other source bed to form the deposits. But Dcu decreases with the S added in experimental system.(3) Tongchang granodiorite porphyry belongs to calc-alkali granite, also has characters of the Adakites. Magma materials coming from the mantle, duritig the fractional crystallization, there exists contamination of the wall-rock. This process was propitious to enrich, activate, transport the copper. In different alteration granodiorite porphyry, SiO2, K2O, Cu, Mo are depleted in the fresh and weakly altered rock, and are enriched in the strongly altered rock, Cl is also enriched in the strongly altered rock. But Na2O and Fe are extracted from the porphyry into the ore-forming fluid, especially the presence of Fe is in favor of Cu deposition.(4) The trace elements and REE geochemistry of the Tongchang granodiorite porphyry indicate, there exists the reaction between the porphyry and the hydrothermal fluid. The hydrothermal fluid was Cl-enriched solution, and flowed from the porphyry center to contact zone.(5) Dajishan granites have high SiO2 content and high A/CNK, show peraluminous granite characters. Granites belong to S-type granite, but the biotite granite was affected by the mantle or mantle fluid. With the evolution of the granitic complexes, the SiO2 and K2O+Na2O increase, but Fe. Al2O3, CaO and F decrease. It supplied more mineralizer(F) and precipitator(Fe,Ca) for mineralization. Strong negative 8 Eu shows thegranites are high evolved granite.(6) The tetrad effect of REE and the obvious fractionation between K-Rb, Y-Ho, Zr-Hf, Nb-Ta, and Sr-Eu in the Dajishan granites indicate that, the aqueous fluid pays an important role in the evolution of the granites, as well as indicate that there exist enough interaction between peraluminous melt and aqueous magmatic fluid. Furthermore the fluorine played a very important role in this process.(7) By studying of ore-forming fluid and the micas (using the F, Cl contents in micas to calculate the halogen fugacity of the hydrothermal fluid, eg. Log (fH2O/fHCl)fluid and log(fHF/fHCl)fluid), Tongchang porphyry copper deposit system is enriched in chlorine, however Dajishan tungsten deposit system is relatively enriched in fluorine, which transport W, Sn, Nb, Ta , et al.(8) According to the characters of the porphyry copper deposits, copper is transported by chlorine, such as CuCl0 and CuCl2. For the tungsten deposits, tungsten...
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