| 胶东蓬莱河西金矿床铅、硫同位素地球化学特征 |
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| 关键词:Pb,S isotopes material sources Hexi gold deposit Jiaodong |
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| Lead and Sulfur Isotope Geochemistry of the Hexi Gold Deposit in Penglai,Eastern Shandong |
| The Hexi gold deposit is located in the Qi-Peng gold zone,one of the three major gold mineralization zones in Jiaodong(eastern Shandong). This deposit occurs mainly in the Goujianling granite body,with a part in the Precambrian metamorphic rocks. The ores are mainly of the auriferous quartz vein type hosted in NE-trending fractures and faults. Sulfur isotope analyses show that δ 34 S values of pyrites vary in the range of 7.4‰～8.5‰,with an average of 7.8‰. Pb isotope analyses reveal that 206 Pb/ 204 Pb , 207 Pb/ 204 Pb and 208 Pb/ 204 Pb ratios of the ore lead are 17.3086～17.4799,15.5264～15.5692,and 38.0973～38.3698,respectively,which are quite similar to the Pb isotope data of lamprophyres in the region,but are significantly different from the data of granites. The research results suggest that the Hexi gold deposit might have partly derived its ore-forming materials from the mantle,and that it shares similar geochemical characteristics with the giant Linglong and Jiaojia gold deposits. |
| HOU Ming-lan,DING Xin,JIANG Shao-yong.2004.Lead and Sulfur Isotope Geochemistry of the Hexi Gold Deposit in Penglai,Eastern Shandong[J].Acta Geoscientica Sinica,25(2):145-150. |
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