首页> 中文期刊> 《地质调查与研究》 >坦桑尼亚西北部卡邦加铜镍硫化物矿床研究进展

坦桑尼亚西北部卡邦加铜镍硫化物矿床研究进展

         

摘要

通过对卡邦加铜镍硫化物矿床近年来研究成果的初步总结,系统分析整理了矿床的地质特征,如矿体分布形态、矿石特征和矿体地球化学特征等。作者认为卡邦加铜镍硫化物矿床是超基性岩体侵入基巴拉带(卡拉圭-安科连)变质沉积岩内形成的贯入式岩浆融离型矿床。其矿体位于超基性岩底部,并与变质沉积岩一同经历后期的碰撞造山作用。矿体中的S主要来源于上地壳变质沉积岩。%The authors summarized previous research results of the Kabanga Ni-Cu sulphide deposits in north-western part of Tanzania. They analyze its geological characteristic, including the orebody shape, ore characteris-tics and geochemical characteristics,and suggest that the kabanga Ni-Cu sulphide deposit is a type of in-trused-Magmatic segregation deposit. The high MgO mafic-ultramafic magma intruded the metasedimentary rocks of the Kibaran Melt (Karagwe-Ankolean) along conduits and emplaced in the lowest of mafic-ultramafic in-trusions and then the deposits folded with the sedimentary rocks of the Kibaran Melt. The S of the kabanga Ni sul-phide deposits might be caused from the upper crustal material-the metasedimentary rocks of Karagwe-Ankolean.

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