%0 Journal Article
%T New type of tin mineralization related to granite in South China:evidence from mineral chemistry, element and isotope geochemistry<br>华南与花岗岩有关的一种新类型的锡成矿作用：矿物化学、元素和同位素地球化学证据
%A JIANG ShaoYong
%A ZHAO KuiDong
%A JIANG YaoHui
%A LING HongFei
%A NI Pei
%A <br>蒋少涌
%A 赵葵东
%A 姜耀辉
%A 凌洪飞
%A 倪培
%J 岩石学报
%D 2006
%I 
%X South China is the most important Sn metallogenie province and there are many large and super-large granite-related tin deposits.Recently a giant tin deposit,the Furong,has been found in the southern Hunan province.Tin mineralized bodies mainly occur in the iault zones and alteration zones of the Qitianling granites,which genetically related to chlorite alteration.The Qitianling granites contain hornblende and have high oxygen fugacity,and are metaluminous.Elemental and isotopic geochemistry suggests that the granites were produced by the mixing of the mantle-derived mafic magma and the crust-derived felsic magma.Therefure,the Qitianling granites are distinctly different from common S-type tin granites and are more similar to A-type granites.Isotope dating results indicate that the age of main stage tin mineralization is 20Ma later than the emplacement of the Qitianling granites.H-O isotope data indicate a dominant influence of meteoric water associated with chlorite alteration.The su]flu" isotope data suggest both the granite and the sedimentary strata provided the sulfur for mineralization.Fractional crystallization of the magma and tin deposition directly from exsolved magmatic-hydrothermal fluids may not be the major mechanism for the tin mineralization in the Furong deposit.Instead,we suggested that tin mineralization may be related with the post-emplacement chloritization of the Qitianling granites.Sn-rich mafic minerals (amphibole,biotite,titanite) released tin and other metals (e.g.Ti) into the hydrothermal fluids when these minerals were altered to chlorites.Then cassiterite and rutile precipitated together with chlorite when the physical and chemical condition of the Sn- and Ti-rich fluids changed.It is a very special model for granite-related tin mineralization.This study provides a new insight into granite-related Sn metallogenesis in South China.
%K Furong tin deposit
%K Qitianling granites
%K Chloritization
%K South China<br>芙蓉锡矿床
%K 骑田岭花岗岩
%K 绿泥石化
%K 华南地区
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=AA5033F1B26EF76F&yid=37904DC365DD7266&vid=BC12EA701C895178&iid=F3090AE9B60B7ED1&sid=2C9CF52C913FA2D8&eid=71E51BD3D819EC5A&journal_id=1000-0569&journal_name=岩石学报&referenced_num=26&reference_num=62