%0 Journal Article
%T Characteristics and Significance of Magmatic-Hydrothermal Transition in Jiama(Gyama) Monzonite Granite-porphyry, Tibet<br>西藏甲玛铜多金属矿二长花岗斑岩岩浆-热液过渡特征及成矿意义
%A QIN Zhi-peng
%A Dorji
%A WANG Xiong-wu
%A LIU Hong-fei
%A ZHOU Yun
%A PENG Hui-juan
%A <br>秦志鹏
%A 多吉
%A 汪雄武
%A 刘鸿飞
%A 周云
%A 彭惠娟
%J 地球学报
%D 2012
%I 
%X Based on basic geological data,this paper summed up the characteristics and metallogenesis of the magmatic-hydrothermal transition in the Jiama(Gyama) monzonite granite-porphyry with the help of the electron microprobe analytical data and rock geochemical data in the aspects of petrology,petrography and geochemistry.The characteristics of the magmatic-hydrothermal transition in the Jiama(Gyama) monzonite granite-porphyry is manifested as tourmalinization-sodium/calcium silicate,like pegmatite-aplite shell(pulse),"adularia-habit" K-feldspar crystals,myrmekite,miarolitic cavities,while the geochemical characteristics are expressed as the growth and decrease of Na/K and the fluctuatation of the volatiles with the separation of the ore-forming materials such as Cu,Mo,Au.The development of the magmatic-hydrothermal transition can be divided into liquid immiscibility and volatile-liquid fractionation,the former dominated the mineral fractionation in the later magma,while the latter controlled the formation of ore solution and ore-forming hydrothermal fluids,forming disseminated mineralization and stockwork mineralization respectively.
%K monzonite granite-porphyry
%K magmatic hydrothermal transition
%K metallogenesis
%K Jiama(Gyama) Cu
%K polymetallic deposit
%K Gangdise ore belt
%K Tibet<br>二长花岗斑岩
%K 岩浆热液过渡
%K 成矿作用
%K 甲玛铜多金属矿
%K 冈底斯成矿带
%K 西藏
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=1DF69A47DE80569EC8F859DF61571180&aid=6E5188C034EC1591F224A91EF5533E60&yid=99E9153A83D4CB11&vid=27746BCEEE58E9DC&iid=E158A972A605785F&sid=3054A11AD1D7E34A&eid=4ECB3941871FD391&journal_id=1006-3021&journal_name=地球学报&referenced_num=0&reference_num=0