马关县都龙锡矿中辉钼矿铼-锇同位素特征及意义  

THE RE-OS ISOTOPE FEATURE AND SIGNIFICANCE OF MOLYBDENITE IN DULONG SN DEPOSIT OF MAGUAN

作　　者：王礼兵 艾金彪[2] Iwang Li-bing;AI Jin-biao(Geological Team,306,Yunnan Bureau of Nonferrous Geology,Kunming 650217;SicCuan Metallurgical Geoexploratioo Institute,Chengdu 610051)

机构地区：[1]云南省有色地质局三O六队,云南昆明650217 [2]四川省冶金地质勘查院,四川成都610051

出　　处：《云南地质》2018年第3期292-297,共6页Yunnan Geology

摘　　要：云南马关县都龙锡矿万龙山矿区深部辉钼矿尚属首次发现,对此辉钼矿样品应用Re-Os同位素定年方法进行了测定,获得Re-Os同位素等时线年龄为88. 9±3. 5 Ma,模式年龄为89. 2±1. 5～91. 8±1. 3Ma。该Re-Os同位素等时线年龄与文山老君山花岗岩体中白云母花岗岩的形成年龄(87. 6±1. 4) Ma～(91. 7±1. 8) Ma、花岗斑岩的结晶年龄为(87. 3±2. 1) Ma、二云母花岗岩的成岩年龄(84. 3±2. 2) Ma～(85. 0±1. 3) Ma相吻合,表明滇东南地区的晚白垩世时期,存在大规模花岗岩成岩及锡成矿活动,两者关系密切。The molybdenite is discovered first in deep of Wanlongslian orefield of DulonYunnan. The isotopic age of this molybdenite sample has been tested by Re-O3. 5Ma, model age 89. 2±1. 5-91. 8±1. 3Ma. The Re-Os isochronic age is concordant wit!i muscage 87. 6±1. 4Ma-91. 7±1. 8Ma,ganite-porphyry ciystaHe age 87. 3±2. 1Ma,ganitelle forming age 84. 385. 0±1. 3Ma in Laojunshan ganite body,Wenshan, whicii shows there are large scale Late Cretaing and Sn metallogenesis in SE Yunnan and they are in close relation each other

关 键 词：辉钼矿 RE-OS同位素 成矿年龄 云南都龙 

分 类 号：O615.2[理学—无机化学]