滩间山金矿田成矿物质来源探讨

通过硫、铅、碳、氢、氧稳定同位素组成，稀土元素特征类此，微量元素含量示踪及包裹体成分特征等几个方面的研究，认为其3个成矿期的成矿物质来源不同：沉积变质初步富集期、变形变质矿化富集期的成矿物质来自围岩——中元古界万洞沟群黑色岩系含金建造（Pt2wd^b）；岩浆热液矿化叠加富集期的成矿物质则主要来自华力西晚期斜长花岗斑岩杂岩岩浆期后热液，部分来自围岩（岩浆热液运移过程中又萃取了围岩中的成矿物质）.

ORIGIN OF THE ORE FORMING MATTER OF TANJIANSHAN GOLD FIELD,QINGHAI PROVINCE

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