华北克拉通北缘东段新发现大喜营子铷－铍矿床

doi:10.13686/j.cnki.dzyzy.2023.02.016

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摘要辽宁省阜新市大喜营子矿床是华北克拉通北缘新发现的铷铍稀有金属矿床,属花岗伟晶岩型矿床,主要由黑云母花岗岩、钠长石花岗岩和天河石花岗伟晶岩组成. 含Rb和Be的主要矿石矿物为天河石和绿柱石,赋存于天河石花岗伟晶岩中. 该矿床的成矿年龄为223 Ma左右. 地球化学特征表明该花岗岩为高分异I型花岗岩,来源于中新元古界基底的高温部分熔融,并有幔源岩浆注入. 大喜营子铷-铍矿床是形成于造山带背景下的过铝岩浆多金属矿床,该矿的发现为华北克拉通北缘的找矿提供了新的方向.

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关键词 ：大喜营子铷-铍矿床, 天河石, 绿柱石, 高分异花岗岩, 华北克拉通, 辽宁省

Abstract：The Daxiyingzi Rb-Be deposit in Fuxin City of Liaoning Province is newly discovered in the northern margin of North China Craton, belonging to the granite-pegmatite type rare metal deposit, mainly composed of biotite granite, albite granite and amazonite granite pegmatite. The ore minerals containing Rb and Be are mainly amazonite and beryl, which are hosted in amazonite granite pegmatite. The metallogenic age of the deposit is about 223 Ma. The geochemical characteristics indicate that the granite is of highly fractioned I-type, which originated from the high-temperature partial melting of Meso-Neoproterozoic basement, with injection of mantle-derived magma. The peraluminous magmatic polymetallic deposit was formed in the orogenic belt setting. Its discovery provides a new direction for mineral exploration in the northern margin of North China Craton.

Key words： Daxiyingzi Rb-Be deposit amazonite beryl highly fractionated granite North China Craton Liaoning Province

收稿日期: 2022-11-16

PACS:

P618.7

基金资助:国家自然科学基金"大兴安岭中生代高分异花岗岩(高硅流纹岩)的成因及其与铍成矿关系研究"(编号92062216),"东天山富铷花岗岩及相关铷矿床的地质特征与成矿机制研究"(编号91962214),"碱性岩浆作用中铌钽元素富集机制研究:以辽东地区赛马铌钽矿床为例"(编号42102087);自然资源部深地动力学重点实验室开放研究课题"幔源岩浆作用与铌钽元素富集成矿关系研究"(编号J1901-16);中国博士后科学基金"辽东地区碱性岩型铌钽矿床成因研究"(编号2022M712966).

通讯作者: 鞠楠(1986-),男,博士,高级工程师,从事关键金属矿产调查研究,通信地址辽宁省沈阳市皇姑区黄河北大街280号,E-mail:junan-cgs@qq.com E-mail: junan-cgs@qq.com

作者简介: 施璐(1988-),男,博士,高级工程师,从事关键金属矿产和岩石学研究,通信地址辽宁省沈阳市皇姑区黄河北大街280号,E-mail:shilu880208@hotmail.com

引用本文:

施璐, 鞠楠, 伍月, 刘欣, 赵迎磊, 马维. 华北克拉通北缘东段新发现大喜营子铷－铍矿床[J]. 地质与资源, 2023, 32(2): 245-248.
SHI Lu, JU Nan, WU Yue, LIU Xin, ZHAO Ying-lei, MA Wei. NEWLY DISCOVERED DAXIYINGZI Rb-Be DEPOSIT IN THE EASTERN SECTION OF THE NORTHERN MARGIN OF NORTH CHINA CRATON. GEOLOGY AND RESOURCES, 2023, 32(2): 245-248.

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