%0 Journal Article
%T A reconnaissance of Cu isotopic compositions of hydrothermal vein-type copper deposit, Jinman, Yunnan, China<br>
%A JIANG Shaoyong
%A Jon Woodhead
%A YU Jimin
%A PAN Jiayong
%A LIAO Qiling
%A WU Nanping
%A <br>
%J 科学通报(英文版)
%D 2002
%I 
%X The Jinman deposit is a low-temperature hydrothermal vein-type copper deposit, which occurs along faults and fractures within Middle Jurassic sandstone and mudstone units of the Lanping-Simao Mesozoic-Cenozoic basin of Yunnan Province. In this note, we report for the first time the Cu isotopic compositions of Cu-sulfides from the Jinman deposit. The data show large variations and low δ65Cu values of  3.70‰to +0.30‰, which are in sharp contrast to the δ65Cu values of high-temperature magmatic-hydrothermal copper deposits ( 0.62‰to +0.40‰) and the modern ocean-floor massive sulfide deposits ( 0.48‰ to +1.15‰). It is suggested that the Cu isotope fractionation at Jinman is affected mainly by the following factors, i.e. a low temperature of ore formation (150–286°C); a sedimentary source for ore materials; various stages of ore deposition; and involvement of organic matter in the ore-forming processes.
%K Cu isotopes
%K Cu-sulfldes
%K hydrothermal vein-type deposit
%K Jinman
%K Yunnan<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=10AA283F21B3AD513E19E705DE559301&yid=C3ACC247184A22C1&vid=F4B561950EE1D31A&iid=38B194292C032A66&sid=002786F01A86D891&eid=1D01216AD76577EC&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=13