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“石碌式”铁氧化物-铜(金)-钴矿床成矿模式初探
  • ISSN号:0258-7106
  • 期刊名称:矿床地质
  • 时间:0
  • 页码:681-694
  • 语言:中文
  • 分类:P618.31[天文地球—矿床学;天文地球—地质学] P618.41[天文地球—矿床学;天文地球—地质学]
  • 作者机构:[1]中国科学院广州地球化学研究所石油天然气与矿产资源研究中心,广东广州510640, [2]中国科学院研究生院,北京100049, [3]海南省地质矿产勘查开发局资源环境调查院,海南海口570260
  • 相关基金:本文得到全国危机矿山接替资源找矿项目(编码:200646092)、国家重点基础研究发展计划973项目(编码:2009CB421001)和国家自然科学基金项目(编码:40773017)的联合资助;志谢 感谢海南省地质矿产勘查开发局黄居锐工程师、陈勇工程师和海南省钢铁公司郭风芳总工程师、梁将工程师等在本项目组进行矿山和区域地质调查期间所给予的大力支持和配合;感谢评审专家为论文的完善所提出的建设性建议和宝贵意见;感谢毛景文研究员对本文的撰写所给予的鼓励!
  • 相关项目:海南岛昌江-琼海断裂带变基性岩成因及构造意义
中文摘要:

石碌铁矿是中国著名的以富赤铁矿为主的大型矿集区,除铁矿外,还共生或伴生铜、钴、镍、银、铅、锌等金属矿产和白云岩、石英岩、重晶石、石膏、硫等非金属矿产。文章通过对石碌铁矿的成矿地质条件和控矿因素的再认识,结合成矿时代的探讨和矿床地球化学资料,认为该矿床严格受层位(主要为青白口纪石碌群第6层)、岩性(钙镁质矽卡岩等)、构造(复式向斜、层间滑脱带、片理和劈理)和/或岩性界面等控制;并强调石碌铁矿所经历的成岩成矿作用与海西期-印支期花岗岩侵位所导致的伸展构造(变质核杂岩构造?)密切相关,而岩浆热扰动则是导致深部含矿热卤水形成、上升并渗滤、交代矿源层的重要因素。最后,作者将该矿床称之为“石碌式”热液铁氧化物-铜-(金)-钴矿床,初步将其归属为IOCG(即热液铁氧化物-铜-金-钴)型层控式钙镁质矽卡岩矿床,并初步构建了该类型矿床的成岩成矿模式。

英文摘要:

The Shilu iron ore deposit in Hainan Island is one of the famous mining areas in China not only for large amounts of hematite resources but also for considerable economic values of associated metals such as copper, cobalt, nickel, silver, lead and zinc as well as of nonmetallic resources like dolomite, quartzite, barite, gypsum and sulfur. The authors re-studied geological conditions responsible for the formation of the Shilu ore deposit and re-evaluated the major factors controlling the orientations of iron, copper and cobalt ore bodies. The results obtained and the evidence of ore-forming age and geochemical data show that the Shilu ore deposit is strictly controlled by strata (mainly the upper 6th formation of the Meso-Neoproterozoic Shilu Group), lithologies (chiefly the magnesian skarn), structures (syncline, interlayer-surging belt, schist and cleavage) and/or interfaees between different lithologies. Diagenesis and metallogenesis in the studied deposit are closely associated with the extension structure, i.e., the metamorphic core complex, which was induced by the emplacement of Hercynian-Indosinian granites. However, magmatic energy after the late Paleozoic not only led to the formation of the orebearing hydrothermal brine at depth but also resulted in the upward migration of the ore-bearing hydrothermal water along various structural pathways and/or interfaces between lithologies. During this process, the ore-bearing hydrothermal brine might infiltrate into and interact with host rocks. As a result, the iron, cobalt and copper-polymetallic ore deposit was formed. Based on the above understanding, the authors have named it for the first time Shilu-type iron oxide-copper-gold-cobalt deposit, and assigned the studied delx)sit to IOCG-type, i.e., iron oxide-copper-gold-cobalt-type strata-bound skarn deposit. A metallogenic model for the studied deposit is also put forward in this paper.

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期刊信息
  • 《矿床地质》
  • 中国科技核心期刊
  • 主管单位:中国科学技术协会
  • 主办单位:中国地质学会矿床地质专业委员会 中国地质科学院矿产资源研究所
  • 主编:毛景文
  • 地址:北京西城区百万庄路26号中国地质科学院矿产资源研究所
  • 邮编:100037
  • 邮箱:minerald@163.net
  • 电话:010-68327284 68999546
  • 国际标准刊号:ISSN:0258-7106
  • 国内统一刊号:ISSN:11-1965/P
  • 邮发代号:82-459
  • 获奖情况:
  • 1992年全国优秀科技期刊评比三等奖,1997年获中国科协优秀科技期刊二等奖,2000年中国科学技术信息研究所1999年影响因子排科...
  • 国内外数据库收录:
  • 美国化学文摘(网络版),美国地质文献预评数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),中国北大核心期刊(2000版)
  • 被引量:14912