地质学报2016，Vol.90Issue(2)：240-249,10.
山东孔辛头铜钼矿成矿时代及物质来源：来自黄铜矿、辉钼矿 Re-Os 同位素证据
Age and Source Constraints for Kongxintou Copper-Molybdenum Deposit Shandong from Re-Os Isotope in Molybdenite and Chalcopyrite
摘要
Abstract
Kongxintou copper-molybdenum depositproduced from skarn which formed via contact metasomatism between Jiaodong Weideshan superunit Yuangezhuang monzonitic granite and Jingshan Group marble.The main orebody occur as lenticular,cystic and veined controlled by fissure structure within the rock body. This research studied the molybdenite,chalcopyrite and magnetite adopting inductively coupled plasma mass spectrometry and thermal ionization mass spectrometry testing Re-Os isotope technology respectively.The results show that the Re-Os isochron age of molybdenite is 117 ±1 Ma,chalcopyrite is 118 ± 3.4 Ma,which consistent with Shangjiazhuang molybdenum deposit and Lengjia molybdenum deposit.Those ore genesis relate to Weideshan superunit,indicating the presence of the Late Yanshan molybdenum mineralization events in Jiaodong.However the magnetite can not get Re-Os isochron age due to poor sealing property.Chalcopyrite Os isotopic initial value Osi= 0.3 ± 0.02,shows the Kongxintou copper-molybdenum deposit into a source of crust mantle mixed,formed from the back-arc extension of Pacific plate subduction to the Eurasian continental in the early Cretaceous.关键词
Re-Os 同位素/辉钼矿/黄铜矿/定年/示踪/孔辛头Key words
Re-Os isotope/molybdenite/chalcopyrite/dating/tracing/Kong Xintou引用本文复制引用
李超,裴浩翔,王登红,周利敏,赵鸿,李欣尉,屈文俊,杜安道..山东孔辛头铜钼矿成矿时代及物质来源：来自黄铜矿、辉钼矿 Re-Os 同位素证据[J].地质学报,2016,90(2):240-249,10.基金项目
本文为自然科学基金项目（41203037）及国土资源地质大调查项目（12120113015500）资助的成果。 （）
