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首次在塔里木地台南缘皮山县境内找到钾镁煌斑岩,它们呈脉状产出,围岩为白云母石英片岩。该钾镁煌斑岩的岩石化学成分与亚洲钾镁煌斑岩的平均岩石化学成分接近,与澳大利亚西金伯利地区钾镁煌斑岩一致,稀土元素及其配分模式位于世界钾镁煌斑岩的范围之内,其中大多数标本具有已知世界钾镁煌斑岩的共同微量元素特征:具Ba、K、La和Ce的正异常及Ta、Nb、Sr和Ti的负异常。该钾镁煌斑岩的发现对研究区金刚石找矿和深部地质过程研究均具深远意义。
For the first time, in the Pingshan County, on the southern margin of the Tarim platform, the lamproas are found. They are vein-shaped and the surrounding rocks are muscovite quartz schist. The pegmatite-phlogoid porphyry has a similar petrochemical composition with the average petrochemical composition of Asia-Asia lamproite, which is consistent with the lamproite of western Kimberly region in Australia. The REE and its complexation modes are located in the world of porphyrite , Most of which have the common trace element characteristics of the known auriferous porphyry in the world with positive anomalies of Ba, K, La and Ce and negative anomalies of Ta, Nb, Sr and Ti. The discovery of the kieselnan lamprophyre is of far-reaching significance for the study of diamond prospecting and deep geological processes in the study area.