地质学报2018，Vol.92Issue(3)：575-586,12.
中条山地区铜矿峪斑岩铜钼矿床电气石硼同位素特征
BoronIsotopic Composition of Tourmaline from Tongkuangyu Porphyry Cu-Mo Deposit
摘要
Abstract
Because boron isotope has good stability,it can be used for tracing source character.The LA-MC-ICPMS tourmaline in-situ B isotope analyses on the tourmaline-bearing sericite-quartz alteration zone exhibit that these tourmalines have δ11B (-21.1‰～1.1‰),these data have two peak value,one enrich with heavy B isotope (-1.5‰ ～ 1.5‰) and other enrich with light B isotope (-16‰ ～ 14‰).Combined with regional geological data and other previous boron isotope data,B isotope of Tongkuangyu copper-molybdenum deposit shows the characteristic of continental hydrothermal system.Based on geological analysis and boron isotope database,we infer that peak value of light B isotope maybe come from wall rock of volcanic rocks,however,slightly heavy B isotope maybe have character of island arc volcanic rocks,and heavy B isotope maybe come from granodiorite-porphyry and granodiorite of Tongkuangyu copper-molybdenum deposit.Comparing to other type porphyry copper deposits and IOCG deposits,Tongkuangyu copper-molybdenum deposit has the characteristics of enrichment light B isotope,which means that many continental B isotope add to mineralization of Tongkuangyu copper-molybdenum deposit.关键词
中条山/铜矿峪/斑岩型铜钼矿/电气石/硼同位素Key words
Zhongtiaoshan/Tongkuangyu/porphyry copper-molybdenum deposits/tourmaline/boron isotope引用本文复制引用
张晗,王宗起..中条山地区铜矿峪斑岩铜钼矿床电气石硼同位素特征[J].地质学报,2018,92(3):575-586,12.基金项目
本文为中国地质调查局武当-随州地区火山杂岩带组成与成矿关系研究(编号:12120113069000)资助的成果. （编号:12120113069000）
