冀東羅文峪地區(qū)鋰云母花崗偉晶巖年代學(xué)研究

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摘要：近些年，冀東羅文峪地區(qū)新發(fā)現(xiàn)了鋰云母花崗偉晶巖，它富集Rb、Li等元素。本文以該偉晶巖為研究對象，對其進(jìn)行鋯石U-Pb測年。研究發(fā)現(xiàn)，該偉晶巖含有老的變質(zhì)鋯石和中生代巖漿鋯石，說明其極可能來自深部，圍巖中的鋯石被同化捕獲，暗示深部具有較好的找礦潛力。

關(guān)鍵詞：鋰云母；花崗偉晶巖；年代學(xué)；羅文峪地區(qū)

中圖分類號(hào)：P597.3 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：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

在冀東中部的羅文峪巖體中，人們首次發(fā)現(xiàn)了鋰云母花崗偉晶巖。（剩余1557字）