黄金科学技术 ›› 2023, Vol. 31 ›› Issue (2): 262-270.doi: 10.11872/j.issn.1005-2518.2023.02.129
杨佐怀1,2(),郭艳琴1,3(),陆诗超2(),段留安4,李峥伟2,黎小勇2,魏彦强2,苏飞2,杨国良2
Zuohuai YANG1,2(),Yanqin GUO1,3(),Shichao LU2(),Liu’an DUAN4,Zhengwei LI2,Xiaoyong LI2,Yanqiang WEI2,Fei SU2,Guoliang YANG2
摘要:
西昆仑塔什库尔干一带苦子干碱性杂岩体是区内最大的新生代碱性杂岩体,关于该岩体与稀土成矿的关系尚不明确。通过野外实地调查和镜下鉴定,对苦子干碱性杂岩体的地质背景进行了调查,并利用主微量元素分析方法对岩石地球化学特征进行了研究。结果表明:苦子干碱性杂岩体各类岩石总体稀土元素含量较高,富集LREE,具有较好的稀土矿找矿前景;苦子干碱性杂岩体主要呈Ce、Y富集特征,且与F元素正相关;赋矿(化)岩石为中粒霓辉正长岩,含萤石、磷灰石和独居石等副矿物,围岩为中粒石英正长岩,二者呈渐变接触,接触界线不明显。
中图分类号:
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