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NEWLY DISCOVERED DAXIYINGZI Rb-Be DEPOSIT IN THE EASTERN SECTION OF THE NORTHERN MARGIN OF NORTH CHINA CRATON |
SHI Lu1, JU Nan1, WU Yue1, LIU Xin1, ZHAO Ying-lei2, MA Wei2 |
1. Shenyang Center of China Geological Survey, Shenyang 110034, China; 2. Liaoning Geological Exploration Institute Co., Ltd., Dalian 116200, Liaoning Province, China |
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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.
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Received: 16 November 2022
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