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GEOCHEMICAL FEATURES OF AMPHIBOLITES OF THE LUZHENGUAN GROUP COMPLEX AND THEIR RELATIONSHIP WITH ORIGIN OF GOLD DEPOSIT IN XIAOTIAN

WANG Xi-rong;LI Shao-xia;SONG Ru-sheng;Institute of Geoanalysis of Anhui Province;Anhui University of Technology;No.313 Team of Bureau of Geology and Mineral Exploration of Anhui Province;  
Based on calculation and analysis of petrological features, petrogeochemical features, trace elements, REE data of amphibolites, this paper discussed the genetic type and parent rock reconstruction of metamorphic rock, and classified it into intermediate-basic to intermediate-acid volcanic rock. Due to similarity in REE characteristic curve, volcanic rock and volcaniclastic rock in the Xiaotian sedimentary depression are thought to have been sourced from basement rock series of the Luzhenguan group complex intermediate-basic to intermediate-acid rock. Based on study of gold abundance in amphibolite, volcanic rock and volcaniclastic rock, it is suggested that ore-forming material of gold deposit is closely related to amphibolites in the Luzhenguan group complex, with amphibolites as the major source material.
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