矿物-溶液间REE的分配系数及其影响因素和地质地球化学意义MINERAL-SOLUTION REE PARTITION COEFFICIENTS: THEIR INFLUENTIAL FACTORS AND GEOLOGICO-GEOCHEMICAL IMPLICATIONS
干国梁
摘要(Abstract)：
本文基于前人测得的橄榄石、石榴子石、单斜辉石、斜方辉石、斜长石和H_2O之间的REE分配系数,讨论了矿物成分、结构和物理化学条件(t、p)对REE分配系数(K_(REE))的影响,提出了预测矿物—溶液间K_(REE)的三条准则,即矿物成分准则、矿物结构准则和溶液成分准则。根据这些准则,本文预测了各种硅酸盐矿物和不同成分溶液(H_2O、Cl~-、F~-、CO_2、CO_3~(2-)、HCO_3~-)之间的K_(REE),并分析了矿物、岩石蚀变过程中REE的活动性和REE的变质热液成矿作用。
关键词(KeyWords)：
基金项目(Foundation):
作者(Author): 干国梁
参考文献(References)：
- 〔1〕 干国梁,一套比较完整、实用的矿物/熔体间元素分配系数资料,《国外花岗岩类地质与矿产》,1987,No.3
- 〔2〕 泰勒,R.P.,B.J.弗赖尔(1983),与花岗岩类有关的矿床的稀土元素岩石地球化学,《国外矿床地质》,1986,No.1
- 〔3〕 Alderton, D. H. M., Pearce, J.A., Potts, P.J., Rare earth element mobility during granite alteration: evidance from southwest England, Earth Planet. Sci. Lett., Vol.49, pp.149-165
- 〔4〕 Cullers, R,L., Medaris, L.G., Haskin, L.A.,Gd: Distribution between aqueous and silicate phase, Science, 1970, Vol.169, pp.580-583
- 〔5〕 Cullers, R.L., Medaris, L.G., Haskin, L.A., Experimental studies of the distribution of rare earth as trace elements among silicate minerals and liquid and water, Geochim. Cosmochim. Acta, 1973, Vol.37, pp.1499-1512
- 〔6〕 Henderson, P. et al., Rare Earth Element Geochemistry. Elsevier Science Publishing Company, 1984
- 〔7〕 Mysen, B.O., Trace element partitioning between garnet peridotite minerals and water-rich vapour: experimental data from 0.5 to 3 GPa, Amer. Mineral., 1979, Vol.64, pp.274-287
- 〔8〕 Zielinski, R.A., Frey, F.A., An experimental study of the partitioning of a rare earth element Gd~(3+) in the system diopside-aqueous vapour, Geochim. Cosmochim. Acta, 1974, Vol.38, pp.545-565