矿床地质2024，Vol.43Issue(4)：712-734,23.DOI:10.16111/j.0258-7106.2024.04.001
低熔点亲铜元素(LMCE)在金成矿中的作用及促进金富集的机理
Study on role of low-melting point chalcophile elements (LMCE) in gold mineralization and its promotion mechanisms in gold enrichment
摘要
Abstract
The low-melting point chalcophile elements (LMCE),including As,Sb,Bi,Hg,Pb,Se,Te,Tl,Sn,etc.,all belong to chalcophile elements in the V·M·Goldschmidt geochemical classification of elements. They have char-acteristics of chalcophile behavior,high electronegativity,low melting point and semi-metallic. During gold min-eralization process,these elements show strong affinities with sulfur,often forming LMCE-sulfides,sulfosalts,selenides,tellurides,and metal intermetallic compounds,and even forming Au intermetallic compounds. LMCE can form melts in ore-forming fluids and play an important bridging role in the efficient enrichment and precipita-tion for Au in gold deposits. The authors focus on the occurrences of LMCE in gold deposits,summarize the char-acteristics of LMCE-Au enrichment in gold deposits,and comprehensively summarize the ore-forming mecha-nisms of LMCE-Au enrichment. In some large-scale gold deposits,in addition to well-known processes such as water-rock reactions,sulfidation,fluid boiling,fluid mixing,organic mineralization,magma degassing,and super-imposed mineralization,fluid-melt separation,dissolution-reprecipitation,mineral recrystallization,mineral sur-face adsorption,and element substitution are also important geological processes for LMCE-Au enrichment in mineralization processes.关键词
低熔点亲铜元素/赋存状态/富集特征/富集机理Key words
low-melting point chalcophile elements/occurrence state/enrichment characteristic/enrichment mechanism分类
天文与地球科学引用本文复制引用
刘家军,汪林炜,翁国明,王大钊,翟德高,高燊,郑波,王佳新,张斌,王冠智,王泽琳..低熔点亲铜元素(LMCE)在金成矿中的作用及促进金富集的机理[J].矿床地质,2024,43(4):712-734,23.基金项目
本文得到国家自然科学基金重大研究计划重点项目(编号:92062219)、国家自然科学基金面上基金(编号:42373072、42272095、4197303)和国家自然科学基金重点项目(编号:41730426)联合资助 （编号:92062219）
