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利用离子探针分析了吉林伊通幔源包体（二辉橄榄岩、辉石岩和易剥橄榄岩）中单斜辉石和富钾玻璃体的微量元素（Ｔｉ、Ｚｒ、Ｎｂ、Ｈｆ、Ｒｂ、Ｓｒ、Ｂａ、Ｙ）和稀土元素（ＲＥＥ）含量。结果表明：（１）二辉橄榄岩的单斜辉石存在三种稀土配分型式：轻稀土（ＬＲＥＥ）亏损型、Ｕ型和ＬＲＥＥ富集型。高场强元素（ＨＦＳＥ）相对相邻ＲＥＥ的亏损程度随ＬＲＥＥ富集程度的增大而增大。分异熔融模型模拟计算表明，二辉橄榄岩为上地幔低程度（０～６％）部分熔融的残余，而ＬＲＥＥ的富集与含挥发份富钾硅酸盐熔体的交代作用有关。“粗粒”和“糜棱”二辉橄榄岩的微量元素组成对比说明地幔交代富集事件发生在剪切变形之前。（２）辉石岩中单斜辉石具有与世界各地岩浆型辉石岩包体相似的稀土配分型式。ＨＦＳＥ亏损程度较低。因而代表了玄武质岩浆高压结晶的产物。辉石岩母岩浆类似于寄主玄武岩浆，而与富钾玻璃体无关。（３）易剥橄榄岩中单斜辉石富集ＬＲＥＥ，稀土配分型式和ＨＦＳＥ亏损程度与富集ＬＲＥＥ的二辉橄榄岩相比均十分相似。因此，微量元素数据支持了由岩石学研究获得的成因模式，即伊通易剥橄榄岩是交代流体与正常二辉橄榄岩相互反应的产物。交代流体（现为富Ｋ玻璃体）的形成与挥发份?
The trace elements (Ti, Zr, Nb, Hf, Rb, Hg, Hg, Hf) of clinopyroxene and potassium-rich vitrinite in the Yitong mantle source enclaves of Jilin Province (lherzolite, pyroxenite and peridotite) Sr, Ba, Y) and rare earth element (REE) content. The results show that: (1) There are three REE types in the clinopyroxene: LREE depletion type, U-type and LREE enrichment. The depletion level of HFSE relative to adjacent REEs increases with the enrichment of LREE. The simulation of the differential melting model shows that the lherzolites are the remnant of partial melting in the upper mantle (0 ~ 6%), and the enrichment of LREE is related to the metasomatism of the volatile potash-rich silicate melt. The comparison of the trace elements of “coarse” and “mylonitized” porphyrocells indicates that the mantle metasomatic enrichment event occurred before the shear deformation. (2) The clinopyroxene in pyroxene has the similar REE patterns with the magmatic pyroxenite inclusions all over the world. HFSE loss is low. Thus representing the product of high pressure crystallization of basaltic magma. Pyroxene magma is similar to host basaltic magma but not potassium-rich vitreous. (3) The enrichment of LREEs in the peridotitic peridotites is similar to that of LREE-enriched peridotites in REE patterns and HFSE depletion. Therefore, the trace element data support the genesis pattern obtained from the petrological study, that is, the Yitongxi pendant peridotite is the product of the interaction between the metasomatic fluid and the normal lherzolite. To account for the formation of fluid (now K-rich glass) and volatile?