冀东罗文峪地区锂云母花岗伟晶岩年代学研究

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摘要：近些年，冀东罗文峪地区新发现了锂云母花岗伟晶岩，它富集Rb、Li等元素。本文以该伟晶岩为研究对象，对其进行锆石U-Pb测年。研究发现，该伟晶岩含有老的变质锆石和中生代岩浆锆石，说明其极可能来自深部，围岩中的锆石被同化捕获，暗示深部具有较好的找矿潜力。

关键词：锂云母；花岗伟晶岩；年代学；罗文峪地区

中图分类号：P597.3 文献标识码：A 文章编号：1008-9500（2023）08-00-03

DOI：10.3969/j.issn.1008-9500.2023.08.014

Chronological Study of Lithium Mica Granite Pegmatite in the Luowenyu Area of Eastern Hebei Province

LI Peng

（Environmental Geological Survey Institute of Hebei Coal Geology Bureau， Shijiazhuang 050085， China）

Abstract： In recent years， lithium mica granite pegmatite has been newly discovered in the Luowenyu Area of Eastern Hebei Province， which is rich in elements such as Rb and Li. Taking the pegmatite as the research object， this paper conducts zircon U-Pb dating on it. Research has found that the pegmatite contains old metamorphic zircons and Mesozoic magmatic zircons， indicating that it is highly likely to come from deep sources， and the zircons in the surrounding rocks have been assimilated and captured， suggesting that there is good prospecting potential in the deep.

Keywords： lithium mica; granite pegmatite; chronology; Luowenyu Area

在冀东中部的罗文峪岩体中，人们首次发现了锂云母花岗伟晶岩。（剩余1557字）