铀矿地质2016，Vol.32Issue(3)：159-164,6.DOI:10.3969/j.issn.1000-0658.2016.03.005
陕西华阳川铀多金属矿床黑云母40Ar／39Ar年龄及其地质意义
40 Ar/39 Ar Geochronology of Biotite in Huayangchuan Uranium-Polymetallic Deposit in Shanxi Province and its Geological Significance
摘要
Abstract
In this study , the forming age of Huayangchuan uranium‐polymetallic deposit was performed on the biotite using Ar Ar dating method.Biotite in carbonatite was dated with a plateau age of 132.58 ± 0.70 Ma ,an isochron age of 133.01 ± 0.74 Ma ,and biotite in biotite‐amphibole‐sulfide‐bearing peg‐matite was dated with a plateau age of 93.72 ± 2.38 Ma , an isochron age of 91.49 ± 1.97 Ma.Microprobe examination found that the biotite was formed prior to the betafite , and therefore the betafite was believed to be formed later than 93.72 ± 2.38 Ma ,which suggested there was a later Early Cretaceous magma hydrothermal U Nb Ti mineralization process in Xiaofuyu‐Huayangchuan‐Huan‐glongpu mineralization belte beside the discoved Triassic carbonatite vein‐type Mo Pb , there occured a Cretaceous porphyry Mo metalization process.关键词
碳酸岩/伟晶岩/黑云母40Ar/39Ar年龄/铀成矿年龄/华阳川矿床Key words
carbonatite/pegmatite/biotite 40 Ar/39 Ar geochronology/uranium mineralization aging/Huayangchuan deposit分类
天文与地球科学引用本文复制引用
何升,李子颖,惠小朝,郭建..陕西华阳川铀多金属矿床黑云母40Ar／39Ar年龄及其地质意义[J].铀矿地质,2016,32(3):159-164,6.基金项目
中国核工业集团公司地矿事业部铀矿地质调查项目“陕西省华阳川铀多金属矿床工艺矿物学研究”（编号地 HZ111）资助。 （）
