| 廖凤初,葛振敏,徐军伟,周英爱,谭昭昭,罗益周,彭陆军,隆廷茂,彭雪.湖南二叠系锰矿成因机制与近几年勘查进展[J].矿产勘查,2026,17(8):1310-1322 |
| 湖南二叠系锰矿成因机制与近几年勘查进展 |
| Genetic mechanism and recent exploration advances of Permian manganese deposits in Hunan Province |
| 投稿时间：2026-06-03 |
| DOI：10.20008/j.kckc.202608002 |
| 中文关键词: 湖南 二叠系 沉积型锰矿 成因机制 勘查进展 |
| 英文关键词: Hunan Permian sedimentary manganese deposit genetic mechanism exploration progress |
| 基金项目:本文受自然资源部新一轮找矿突破战略行动科技支撑项目(ZKKJ202407)和湖南省地质院重大科研项目(HNGSTP202402)联合资助。 |
| 作者 | 单位 | | 廖凤初 | 地球化学过程与资源环境效应湖南省重点实验室,湖南长沙 410014
湖南省地球物理地球化学调查所,湖南长沙 410014 | | 葛振敏 | 地球化学过程与资源环境效应湖南省重点实验室,湖南长沙 410014
湖南省地球物理地球化学调查所,湖南长沙 410014 | | 徐军伟 | 地球化学过程与资源环境效应湖南省重点实验室,湖南长沙 410014
湖南省地球物理地球化学调查所,湖南长沙 410014 | | 周英爱 | 湖南省地球物理地球化学调查所,湖南长沙 410014 | | 谭昭昭 | 地球化学过程与资源环境效应湖南省重点实验室,湖南长沙 410014
湖南省地球物理地球化学调查所,湖南长沙 410014 | | 罗益周 | 湖南省地球物理地球化学调查所,湖南长沙 410014 | | 彭陆军 | 湖南省地球物理地球化学调查所,湖南长沙 410014 | | 隆廷茂 | 地球化学过程与资源环境效应湖南省重点实验室,湖南长沙 410014
湖南省地球物理地球化学调查所,湖南长沙 410014 | | 彭雪 | 湖南省地球物理地球化学调查所,湖南长沙 410014 |
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| 中文摘要: |
| 湖南锰矿资源具有较好的勘探潜力，但是目前对于其成矿地质条件及富集机制仍缺乏系统的认识。近年来，随着国家新一轮找矿突破战略行动的实施，湖南二叠系锰矿成矿理论研究与找矿勘查取得了实质性突破。本文系统梳理了湖南二叠系锰矿成因机制，概括总结了成矿规律、找矿标志与近几年勘查进展。研究认为:区内锰矿矿石矿物主要为锰方解石、含锰方解石、锰白云石、钙菱锰矿等；成矿物质以海底热液来源为主，成矿环境为贫氧—缺氧硫化环境；锰在氧化还原分层海水中迁移富集，最终在缺氧底层水中直接沉淀成矿。区内成矿规律可概括为“层位控矿、岩性控质、向斜控展、界面控富”。理论分析及勘查验证发现，祁零盆地、邵阳盆地和桂阳盆地均具备优越二叠系锰矿成矿条件，其中以祁零盆地资源潜力最优，累计探获锰资源量 1.2亿 t，特别是 2024年以来，在东湘桥、水埠头和新宅里矿区新增锰资源量达 4343万 t。 |
| 英文摘要: |
| Hunan Province hosts great exploration potential for manganese deposits. However, there is still alack of systematic understanding of their metallogenic geological conditions and enrichment mechanisms. With theimplementation of the new round of national mineral exploration breakthrough strategy, significant advances havebeen made in both the metallogenic theory and exploration of Permian manganese deposits in Hunan Province in re.cent years. This paper systematically reviews the genesis mechanisms of Permian manganese deposits in Hunan,and summarizes the metallogenic regularities, prospecting indicators and exploration advances achieved in recentyears.This review summarizes that the main ore minerals in the region are Mn-calcite, manganese-bearing calcite,kutnohorite, and calcium-rhodochrosite. The ore-forming materials are predominantly derived from submarine hy.drothermal activities, and the metallogenic environment is characterized by weakly aNOxic to aNOxic sulfidic condi.tions. Manganese migrated and concentrated in redox-stratified seawater and ultimately precipitated directly in theaNOxic bottom water environments. The metallogenic regularities in the study area can be summarized as "strata con.trolling occurrence, lithology controlling grade, syncline controlling distribution, redox interface controlling enrich.ment". Theoretical analysis combined with exploration verification indicates that the Qiling, Shaoyang, and Guiyangbasins all possess favorable metallogenic conditions for Permian manganese deposits, with the Qiling Basin showingthe highest resource potential. The total proven manganese resources in the Qiling Basin stand at 120 million tons,including an additional 43.43 million tons delineated in the Dongxiangqiao, Shuibutou, and Xinzhaili manganese de.posits since 2024. |
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