%0 Journal Article
%T The distribution of platinum-group elements in gabbros from Zhujiapu, Dabie orogen<br>大别造山带祝家铺辉长岩的铂族元素特征
%A LIU Qing
%A HOU QuanLin
%A ZHOU XinHua
%A XIE LieWen Institute of Geology
%A Geophysics
%A Chinese Academy of Sciences
%A Beijing
%A China Graduate School of the Chinese Academy of Sciences
%A Beijing
%A China
%A <br>刘庆
%A 侯泉林
%A 周新华
%A 谢烈文
%J 岩石学报
%D 2005
%I 
%X The contents of platinum group elements ( PGEs: Ir, Ru, Rh, Pt, Pd) in Zhujiapu gabbros have been determined using ICP-MS after a nickel sulphide fire assay preconcentration. The absolute PGE abundances for all of the fourteen samples are extremely low. They display pronounced positively-sloping in mantle-normalized pattern that highlight their slightly depleted in PPGEs and strongly depleted in IPGEs. Pd/Ir ratios (22-138) are higher than that of primitive mantle. These characters suggest the fractionation of PGE in the gabbros of Zhujiapu. Sulphide segregation has happened in the original magma. S-saturation of the magma can be promoted by crust contamination. PCE fractionation in the gabbros is controlled by the phase that can potentially fractionate IPGEs is spinel,sometimes maybe Os-Ir alloy,but the PPGEs reside in sulfide.
%K Platinum group elements
%K Gabbro
%K Fractionation
%K Partial melting<br>铂族元素
%K 辉长岩
%K 分异作用
%K 部分熔融
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=967506DBB2F4B350&yid=2DD7160C83D0ACED&vid=659D3B06EBF534A7&iid=CA4FD0336C81A37A&sid=0DEB7A8A66C33AAD&eid=1DF3F9D75A12D97B&journal_id=1000-0569&journal_name=岩石学报&referenced_num=9&reference_num=79