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Petrochemical Characteristics of Zhongbao Rock from the Zhongbao Tungsten Deposit in Tuokexun, Xinjiang Province
Author(s): JING Baosheng, YAN Suiqiang, LIU Songming
Pages: 582-
586
Year: 2012
Issue:
6
Journal: Resources Environment & Engineering
Keyword: 忠宝岩体; 钨矿; 岩石化学特征; S型花岗岩;
Abstract: 忠宝岩体地处新疆中天山南缘之阿特乌里干山南坡,南邻库米什坳陷,该地段在早古生代晚期-早泥盆世存在一次大规模陆缘弧花岗岩的侵入活动,忠宝岩体便是本次花岗岩侵入活动的产物.忠宝岩体主要岩性为二长花岗岩、钾长花岗岩、正长岩等,与W成矿关系密切的岩体SiO2含量65.22% ~ 73.95%,Na2O+K2O总量在7.98% ~ 11.2%之间,ω(K2O)/ω(Na2O) =1.29~1.69,里特曼指数σ=2.09 ~2.40,CIPW刚玉介于1.71%~3.12%之间,铝饱和系数A/CNK> 1.11,属于过铝质、钙碱性花岗岩系列,为后造山花岗岩类,具S型花岗岩特征.
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