Gallium- and germanium-rich sphalerite in the Sichuan-Yunnan-Guizhou region: Insights from the Fule carbonate-hosted Pb-Zn deposit

IF 3.2 2区 地球科学 Q1 GEOLOGY
Lei Wang , Yan Zhang , Runsheng Han , Dianwen Liu , Yi Chen
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Abstract

The Sichuan-Yunnan-Guizhou (SYG) region hosts significant resources of critical metals gallium (Ga) and germanium (Ge), which are essential to the development of green technologies. The content and distribution of Ga and Ge in sphalerite from the carbonate-hosted Pb-Zn Fule deposit in this region need to be evaluated. Based on laser ablation-inductively coupled plasma-mass spectrometry analysis, we investigate Ga, Ge, and other minor and trace element composition in different types of sphalerite from this deposit. Two major mineralization stages (I and II) were recognized in hydrothermal period. The highest Ga (mean 218 ppm) and Ge (mean 760 ppm) contents were both found in reddish-brown sphalerite (Sp1rb) formed in stage I. Varicolored sphalerite (Sp2) deposited in stage II and white sphalerite (Sp1w) formed in stage I exhibit the lowest Ga (mean 0.25 ppm) and Ge (mean 13.2 ppm) contents, respectively. Trace element content correlations reveal Ga incorporation via direct substitution and Ge incorporation via substitution coupled to monovalent copper ion. Additionally, the sphalerite color variations (reddish-brown, yellow, and white) at Fule are related to the contents of Cu, Ga, Ge, As, and Sb. Compared to sphalerite in the other typical Pb-Zn deposits in the SYG region, sphalerite from the Fule deposit is more enriched in Ga and Ge. Considering the close spatial relationship between the Fule deposit and the Emeishan basalts, we propose that the Emeishan basalts may have contributed additional Ga and Ge to this deposit.

Abstract Image

川云贵地区富镓锗闪锌矿:来自富碳酸盐岩铅锌矿床的启示
川云贵地区拥有重要的关键金属镓(Ga)和锗(Ge)资源,这对绿色技术的发展至关重要。该区碳酸盐型铅锌富矿床闪锌矿中Ga、Ge的含量和分布需要进行评价。基于激光烧蚀-电感耦合等离子体质谱分析,研究了该矿床不同类型闪锌矿中Ga、Ge等微量元素的组成。热液期主要分为ⅰ期和ⅱ期成矿作用。第一阶段形成的红褐色闪锌矿(Sp1rb) Ga含量最高(平均218 ppm), Ge含量最高(平均760 ppm)。第二阶段形成的彩色闪锌矿(Sp2)和第一阶段形成的白色闪锌矿(Sp1w) Ga含量最低(平均0.25 ppm), Ge含量最低(平均13.2 ppm)。微量元素含量相关性表明,Ga通过直接取代掺入,Ge通过与单价铜离子耦合取代掺入。富里闪锌矿闪锌矿的颜色变化(红褐色、黄色和白色)与Cu、Ga、Ge、As和Sb含量有关。与SYG地区其他典型铅锌矿闪锌矿相比,富里闪锌矿闪锌矿的Ga和Ge含量更丰富。考虑到富尔矿床与峨眉山玄武岩的密切空间关系,我们认为峨眉山玄武岩可能为富尔矿床贡献了额外的镓和锗。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Ore Geology Reviews
Ore Geology Reviews 地学-地质学
CiteScore
6.50
自引率
27.30%
发文量
546
审稿时长
22.9 weeks
期刊介绍: Ore Geology Reviews aims to familiarize all earth scientists with recent advances in a number of interconnected disciplines related to the study of, and search for, ore deposits. The reviews range from brief to longer contributions, but the journal preferentially publishes manuscripts that fill the niche between the commonly shorter journal articles and the comprehensive book coverages, and thus has a special appeal to many authors and readers.
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