Distribution characteristics and differential enrichment mechanism of rhenium in molybdenite in the Dexing copper ore field

IF 1.7 3区地球科学 Q2 GEOLOGY 岩石学报 Pub Date : 2023-01-01 DOI:10.18654/1000-0569/2023.10.15

LENG ChengBiao, CHEN TaoLiang, REN Zhi, ZHAO Yan, WANG AnDong, WANG FangYue

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引用次数: 0

Abstract

世界上绝大部分Re赋存在斑岩型矿床的辉钼矿之中,且分布极不均匀。在矿床-矿石-矿物颗粒等不同尺度上,Re含量均存在较大差异,但造成这些差异的因素目前尚不清楚。本文以德兴矿田中富家坞和铜厂二个矿床的辉钼矿为研究对象,在细致的矿相学研究的基础上,对其开展了EPMA、LA-ICP-MS和XRD分析,同时结合前人研究资料,详细探讨了Re在这两个矿床辉钼矿中的分布规律及差异性富集机制。结果显示:富家坞和铜厂均普遍发育两种形态的辉钼矿(细粒集合体型和粗粒片状型),Re在两种辉钼矿中的分布均极为不均,但细粒集合体型相对更富Re,而同一形态辉钼矿铜厂矿床则具有更高的Re含量;同一矿床中辉钼矿结晶越晚,往往越富集Re;个别辉钼矿可见扭结现象,且扭结部位的Re含量更低,暗示后期构造变形可能导致了Re的丢失;两个矿床高Re辉钼矿和低Re辉钼矿的结构均为2H多型,表明Re含量与辉钼矿晶体结构无关。结合前人资料,本文认为成矿流体性质(如温度、盐度等)是导致铜厂和富家坞辉钼矿Re含量差异的主要因素。

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来源期刊

岩石学报 Earth and Planetary Sciences-Geochemistry and Petrology

CiteScore

3.60

自引率

22.20%

发文量

5997

审稿时长

6 months

期刊介绍： Acta Petrologica Sinica is an academic journal under the supervision of the Chinese Academy of Sciences and sponsored by the Chinese Society of Mineralogy, Petrology and Geochemistry and the Institute of Geology and Geophysics of the Chinese Academy of Sciences. The journal's publishing policy is to adhere to innovation, comprehensiveness, cutting-edge and orientation, advocate diversity and multi-school, rely on and unite the vast number of geoscientists across the country, explore the mysteries of nature, carry out extensive and in-depth basic theoretical research, promote the research and development of the field of earth science in my country, publish high-level scientific research results, and cultivate and train a large number of geoscientific research talents for my country. Acta Petrologica Sinica mainly reports on various disciplines related to the basic theory of petrology, including important basic theories and applied research results in magmatic petrology, metamorphic petrology, sedimentary petrology, petrology geotectonics, rock isotope chronology and isotope geochemistry, rock mineralization, and rock-forming mineralogy. At the same time, the journal also publishes review articles, problem discussions, academic trends and book reviews.