投稿时间：2016-08-23
修订日期：2016-09-30
网络发布日期：2017-01-04
中文摘要:刚果（布）布谷马西钾盐矿床位于非洲大陆西部边缘，是白垩纪时期沉积的大型钾盐矿床。文章运用X射线衍射、薄片鉴定、扫描电镜和岩石地球化学等方法，识别出布谷马西钾盐矿的主要盐类矿物有硬石膏、石盐、光卤石、钾石盐、水氯镁石和溢晶石。盐类矿物的沉积顺序为：硬石膏→石盐→光卤石→钾石盐→水氯镁石或溢晶石。该矿区的成盐物质主要来源于海水，盐类沉积物中贫碳酸盐和硫酸盐矿物，可能与白垩纪“方解石海”的海水成分密切相关。矿区中的钾石盐主要是由光卤石淋滤形成。
Abstract:The Cretaceous Mboukoumassi potash deposit in the Republic of Congo is a large potash deposit on the West African continental margin. The main mineral species in Mboukoumassi include anhydrite, halite, carnallite, sylvite, bischofite and tachydrite, as revealed by means of X-ray diffraction, thin section identification, SEM and geochemical analysis of rock in this paper. The formation of salt minerals is in order of anhydrite→halite salt→carnallite→sylvite→bischofite or tachydrite. Salt materials of this potash deposit were mainly derived from the Cretaceous seawater and thus salt mineral species characterized by minor carbonate and sulfate might have been closely related to the Cretaceous "calcite sea". Sylvite in the mining area was formed by leaching of carnallite.
文章编号：
中图分类号：P619.21+1
文献标志码：
基金项目:本文受到国家重点基础研究发展计划“973”项目（编号：2011CB403007）和深圳中航资源有限公司共同资助
引用文本：
范美玲,刘成林,焦鹏程,徐海明,曹养同.2016.刚果(布)布谷马西钾盐矿床盐类矿物特征与成因研究[J].矿床地质,35(6):1257~1268FAN MeiLing,LIU ChengLin,JIAO PengCheng,XU HaiMing,CAO YangTong.2016.Salt mineral characteristics and genesis of Mboukoumassi potash deposit in the Republic of Congo[J].Mineral Deposits35(6):1257~1268
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