Knowledge Management System Of Guangzhou Institute of Geochemistry,CAS
Xian, Haiyang1,2; He, Hongping1,2,3![]() ![]() ![]() | |
Hyperenrichment of gold in pyrite induced by solid-state transportation | |
刊名 | COMMUNICATIONS EARTH & ENVIRONMENT |
2022-12-05 | |
卷号 | 3期号:1页码:6 |
DOI | 10.1038/s43247-022-00628-x |
语种 | 英语 |
WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences |
摘要 | The hyperenrichment of gold is critical for the formation of high-grade gold deposits in orogenic systems, where gold enrichment can reach several percent. However, many details on the nature of the hyperenrichment mechanism remain unclear. Here we show a "self-purification " model that could explain the hyperenrichment of gold from nanoparticles to veinlets in deformed pyrite. The three-dimensional spatial relationship and coexistence of gold nanoparticles and veinlets indicate a direct transformation from the former to the latter in solid-state. Theoretical evaluation reveals that this transformation involves a thermodynamically favorable self-purification process. We thus propose that deformation/thermo drives the transport of gold nanoparticles towards veinlets in pyrite through atomic diffusion. This deformation/thermo-driven model is applicable to any deformed nano-gold-bearing pyrite and explains how solid-state transport can effectively concentrate gold to a very high grade. Similar mechanisms may have broad implications in both ore-forming and beneficiation processes. |
WOS记录号 | WOS:000894466400003 |
收录类别 | SCI |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.gig.ac.cn/handle/344008/69892 |
专题 | 中国科学院矿物学与成矿学重点实验室 |
通讯作者 | He, Hongping |
作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China 2.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.China Univ Geosci, Sch Earth Sci & Resources, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China 5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 6.Ritsumeikan Univ, Res Org Sci & Technol, Kusatsu, Shiga 5258577, Japan 7.Japan Synchrotron Radiat Res Inst, Hyogo 6795198, Japan 8.Ehime Univ, Grad Sch Sci & Engn, Dept Math, Phys, Matsuyama, Ehime 7908577, Japan 9.Kyoto Univ, Grad Sch Sci, Dept Earth & Planetary Sci, Sakyo Ku, Kyoto 6068502, Japan |
推荐引用方式 GB/T 7714 | Xian, Haiyang,He, Hongping,Zhu, Jianxi,et al. Hyperenrichment of gold in pyrite induced by solid-state transportation[J]. COMMUNICATIONS EARTH & ENVIRONMENT,2022,3(1):6. |
APA | Xian, Haiyang.,He, Hongping.,Zhu, Jianxi.,Qiu, Kunfeng.,Li, Yang.,...&Zhu, Runliang.(2022).Hyperenrichment of gold in pyrite induced by solid-state transportation.COMMUNICATIONS EARTH & ENVIRONMENT,3(1),6. |
MLA | Xian, Haiyang,et al."Hyperenrichment of gold in pyrite induced by solid-state transportation".COMMUNICATIONS EARTH & ENVIRONMENT 3.1(2022):6. |
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