园珠顶铜钼矿床成矿流体特征及成矿机制  

Characteristics of Ore-forming Fluids and Forming Mechanism of Yuanzhuding Cu-Mo Ore Deposit

作　　者：楚克磊[1] 余长发[2] 林良庄[3] 林秀广[3] 

机构地区：[1]中国地质科学院矿产资源研究所 [2]中国地质大学地球科学与资源学院 [3]广东省地质勘查局719地质大队

出　　处：《金属矿山》2013年第6期93-95,103,共4页Metal Mine

基　　金：中国地质大调查项目(编号:1212011120831)

摘　　要：通过对园珠顶斑岩型铜钼矿床地质特征的详细观察,结合对各阶段包裹体及H、O同位素的测试结果,认为成矿流体主要来自于岩浆,并与少量大气降水相混合。园珠顶矿床中辉钼矿与黄铜矿产状及成因机制不同,辉钼矿主要来自于成矿斑岩体,大气降水的参与以及钾化蚀变作用是导致辉钼矿沉淀的主要原因,而黄铜矿应为成矿流体长时间与围岩交代的产物。Through the detailed observation of the geological characteristics of Yuanzhuding porphyry Cu-Mo deposit,and combining with the tests on the inclusions at each stage and H,O isotope,it is considered that the ore-forming fluids mainly come from the magma,and are mixed with small amounts of atmospheric precipitation.In Yuanzhuding deposit,the occurrence and its ore-forming mechanism of molybdenite are different from that of chalcopyrite.Molybdenite is mainly from the porphyry ore-body,and the atmospheric precipitation as well as the K-metasomation is the main reason for molybdenite precipitation.While chalcopyrite should be the product under the metasomatism of ore-forming fluids with surrounding rock for a long period of time.

关 键 词：园珠顶 斑岩 流体包裹体 H-O同位素 

分 类 号：P618.51[天文地球—矿床学]