%0 Journal Article
%T New chronological evidence for Yanshanian diagenetic mineralization in China''s Altay orogenic belt<br>
%A CHEN Fuwen
%A <br>
%J 科学通报(英文版)
%D 2000
%I 
%X Granitoids and related pegmatitic rare-metal deposits are widespread in China’s Altay region, they used to be considered as Hercynian rocks and mineral deposits. Reported here are the40Ar-39Ar ages of potassium-rich minerals (muscovite and microcline) in the Koktokay pegmatitic rare-metal orefield and whole-rock as well as quartz fluid-inclusion Rb-Sr isochron ages of granite and ores in the Shangkelan pegmatite rare-metal orefield. The ages indicate that there are Yanshanian Diagenetic Mineralization events happening in China’s Altay orogenic belt and that formation of the famous Koktokay No.3 pegmatitic rare-metal deposit endured about 30 Ma of magmatic crystallization differentiation.
%K Yanshaninn diagenetic mineralization
%K isochronologicai evidence
%K Altay orogenic belt<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=045A387260907C3D2AC13FEC7C2EFDED&yid=9806D0D4EAA9BED3&vid=94E7F66E6C42FA23&iid=0B39A22176CE99FB&sid=6270DC1B5693DDAF&eid=DDD31293A7C7D057&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=15