矿床地质2026，Vol.45Issue(4)：868-882,15.DOI:10.16111/j.0258-7106.2026.04.008
赣西宜春-新余地区金矿床成矿规律与成矿模式
Metallogenic regularity and metallogenic model of gold deposits in Yichun-Xinyu area of western Jiangxi Province
摘要
Abstract
The tectonic position of the Yichun-Xinyu area in western Jiangxi is located at the southwestern end of the Pingle depression in the northeastern segment of the Qinhang junction zone.The region exhibits intense tectonic activity and magmatic activity,with superior geological conditions for gold mineralization.Currently discovered gold deposits in the area are predominantly small to medium-sized and exhibit diverse types,moreover,the ore de-posits exhibit diverse types.Research on metallogenic processes and ore-forming regularities is crucial for advanc-ing regional gold mineralization theory and achieving exploration breakthroughs.Building on previous studies,this research conducted systematic field investigations focusing on multiple geological bodies,multiple ore-hos-ting strata,and tectonic controls on mineralization.Different types of typical deposits were analyzed to clarify the characteristics of gold mineralization and its controlling factors,summarize ore-forming regularities,and estab-lish a metallogenic model.Research has shown that the main mineralization period of gold in the region is the In-dosinian or Yanshanian period.The ore-forming materials and fluids of gold deposits exhibit multi-source charac-teristics.The ore-forming materials of quartz vein type gold deposits mainly come from magma,and some come from metamorphic basement strata.The ore-forming materials of altered rock type gold deposits mainly come from magma,while some surrounding strata add ore-forming materials such as sulfur and gold.The ore-forming materials of micro disseminated gold deposits mainly come from the gold bearing strata in the basement and cap rocks.In terms of ore-forming fluids,quartz vein type gold deposits are mainly composed of magmatic hydrother-mal fluids,with atmospheric precipitation mixed in during the late stage.The main source of altered rock type gold deposits is magmatic hydrothermal fluids.Micro disseminated gold deposits exhibit a mixed acidic fluid mainly composed of atmospheric precipitation and a small amount of magmatic water.Based on these findings,the author proposed a new metallogenic model for the Yichun-Xinyu region,characterized by"multiple types,multiple stages,and multi-source fluids"in gold mineralization.关键词
金矿/成矿规律/成矿模式/宜春-新余地区/赣西Key words
gold deposits/metallogenic regularity/metallogenic model/Yichun-Xinyu area/western Jiangxi Province分类
天文与地球科学引用本文复制引用
曾凯,李昌元,王俊涛,袁启玉,高翔..赣西宜春-新余地区金矿床成矿规律与成矿模式[J].矿床地质,2026,45(4):868-882,15.基金项目
本文得到中国地质调查局项目(编号:DD20230206513)和中国地质调查局花岗岩成岩成矿地质研究中心开放基金(编号:PMGR202508)联合资助 （编号:DD20230206513）
