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ORIGIN OF THE ORE FORMING MATTER OF TANJIANSHAN GOLD FIELD,QINGHAI PROVINCE |
Guo Jiahui, Chen Shuwang |
Shenyang Institute of Geology and Mineral Resources |
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Abstract Tanjianshan gold field,including Jinlonggou middle-large scale gold deposit and Xijingou minor deposit,is lacated at the southeast end of Tanjianshan Mt.,75 km northwest of Dachaidan,Qinghai Province The deposits were formed in three mineralizing epoches:depositional-metamorphic initial enrichment epoch,deformational-metamorphic mineralizing enrichment epoch and magmatic hydrothermal mineralizing superimposed enrichment epoch The ore-forming matter for the former two epoches is from the host strata-gold-bearing formation of the black rock series in Meso-proterozoic Wandonggou group;while for the latter epoch,is mainly from the post-magmatic hydrothermal of late Variscan plagiogranite porphyry complex,and partly from the host strata,from which the ore-forming material is extracted during the magmatic hydrothermal migration
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Received: 20 June 1997
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