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矿产勘查与资源评价

海南富文金矿床矿石、围岩及地层元素地球化学特征及地质意义

  • 崔文玮 , 1 ,
  • 晁会霞 , 1 ,
  • 何虎军 1 ,
  • 杨兴科 1 ,
  • 杨俊杰 1 ,
  • 朱昊磊 1 ,
  • 吴旭 2
展开
  • 1. 长安大学地球科学与资源学院,陕西 西安 710054
  • 2. 中国地震局地球物理研究所,北京 100081
晁会霞(1979-),女,河南南阳人,讲师,从事矿相、矿床及矿产资源预测研究工作。

崔文玮(1997-),女,山西晋城人,硕士研究生,从事矿产勘查研究工作。

收稿日期: 2022-09-27

  修回日期: 2023-02-09

  网络出版日期: 2023-07-20

基金资助

新北京垚鑫矿业公司委托项目“海南定安金矿成矿背景、控矿条件和勘查靶区研究”、陕西省自然科学基金项目“地质大数据挖掘与智能预测找矿靶区实验研究”(2023-JC-YB-261)

“利用飞秒激光质谱研究钨矿蚀变带的微量元素分异及找矿标志——以南秦岭棋盘沟钨矿为例”(2023-JC-YB-276)

Element Geochemical Characteristics and Significance of Ore,Wall Rock and Stratum in Fuwen Gold Deposit,Hainan

  • Wenwei CUI , 1 ,
  • Huixia CHAO , 1 ,
  • Hujun HE 1 ,
  • Xingke YANG 1 ,
  • Junjie YANG 1 ,
  • Haolei ZHU 1 ,
  • Xu WU 2
Expand
  • 1. School of Earth Science and Resources, Chang’an University, Xi’an 710054, Shaanxi, China
  • 2. Institute of Geophysics, China Earthquake Administration, Beijing 100081, China

Received date: 2022-09-27

  Revised date: 2023-02-09

  Online published: 2023-07-20

本文亮点

海南富文金矿床位于华南褶皱系五指山褶皱带北缘,主要出露早白垩世鹿母湾组(K1 l)含砾碎屑沉积岩。金矿体呈脉状和似层状赋存于鹿母湾组砂岩层间破碎带中。为进一步探讨富文金矿的成矿物质来源,对石英脉型矿石、赋矿围岩鹿母湾组碎屑沉积岩及岩浆岩进行主量、微量和稀土元素测试分析。结果显示:矿石与围岩地层、岩浆岩具有相似的微量元素变化趋势以及相似的稀土配分模式,预示着成矿与地层、岩浆岩关系密切。早白垩世石英闪长岩、细粒花岗岩和碎屑沉积岩均为矿体的形成提供了成矿物质,矿床类型为岩浆热液型金矿。

本文引用格式

崔文玮 , 晁会霞 , 何虎军 , 杨兴科 , 杨俊杰 , 朱昊磊 , 吴旭 . 海南富文金矿床矿石、围岩及地层元素地球化学特征及地质意义[J]. 黄金科学技术, 2023 , 31(3) : 423 -432 . DOI: 10.11872/j.issn.1005-2518.2023.03.128

Highlights

The Fuwen gold deposit is located in Fuwen County,central and northern Hainan Province,and also in the northern margin of the Wuzhishan fold belt of the South China fold system.The Early Cretaceous Lumuwan Formation (K1 l) is mainly exposed in the ore district.The structure in this area is developed,the magmatic volcanic movement is more frequent,the gold mineralization points are more,and the metallogenic geological conditions are better.Geological and mineral work was carried out earlier in the area,including geophysical exploration,geochemical exploration,mineral exploration,etc.,but these works focused on the ore fabric characteristics,sulfide characteristics,ore-forming fluid characteristics and isotope date of the deposit,and the research methods of element geochemical testing of gold deposits are less involved.In order to further explore the source of ore-forming materials of Fuwen gold deposit,this paper analyzed the main,trace and rare earth elements of quartz vein type ore,clastic sedimentary rock and magmatic rock of Lumuwan formation.The chemical analysis of the main components of the clastic sedimentary rocks in Lumuwan Formation shows that the weathering and alteration of the source area are weak,which reflects that the sedimentary rocks were first deposited in the active tectonic belt,and the provenance is mainly felsic rocks.The results of chemical analysis of rare earth elements show that REE is characterized by enriched LREE,lost HREE,and right-inclined normalized curve patterns,and the standardized distribution curves of REE in each sample are basically the same.It is inferred that the ore has homology with strata and rock masses.The results of trace element chemical analysis show that the ore,Lumuwan Formation strata and rock mass (quartz diorite,fine-grained granite) are significantly lost in Ba,Nb,Sr,Hf and enriched in Rb,Th,U,Pb,Sm,and their distribution trends are similar.Comprehensive analysis shows that the formation of Fuwen gold ore body in Hainan is closely related to Lumuwan strata and rock mass.Both of them provide ore-forming materials for the formation of ore bodies,and the deposit type is a magmatic hydrothermal deposit.

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武当—桐柏—大别地区新一轮找矿突破战略行动实施方案编制完成

据7月17日报道,中国地质调查局武汉地质调查中心、天津地质调查中心、南京地质调查中心和河南、湖北、安徽三省地质部门的40多名专家齐聚武汉,历时14天合力完成了《武当—桐柏—大别地区新一轮找矿突破战略行动实施方案(内审稿)》的编制工作。

此次方案编制,是针对主题教育整改清单提出的河南新一轮找矿突破问题所采取的具体举措,旨在推动河南新一轮找矿突破更多项目充分利用中央资金,助力河南省新一轮找矿突破战略行动取得良好效果;也为贯彻落实桐柏—大别找矿突破行动战略合作协议相关内容,以及合作联席会议暨技术交流会议精神,从而加快推进新一轮找矿突破战略行动,进一步促进三省六方地质部门交流合作。

本次方案编制以巩固、新增大型资源基地为目标,在系统总结上一轮找矿工作进展的基础上,聚焦紧缺战略性矿产并兼顾优势矿产,划分了3个资源基地和10个资源潜力区,部署了区域基础调查、矿产地质调查、区块优选调查评价、矿产勘查、找矿预测(科学研究)、选矿研究(综合利用)6类167个项目,力争提交一批找矿靶区及矿产地,提交一批可供出让的勘查区块,新增一批资源量,形成2~3处矿产资源基地,科技创新取得原创性突破,助推“三山”革命老区高质量发展。

全球地球化学观测网与数字化学地球国际合作项目启动

5月29日,地球观测组织(GEO)项目“化学地球:全球地球化学观测网与数字化学地球”启动暨研讨会在京召开。成秋明、吴丰昌、毛景文3位院士及来自自然资源部国际合作司、科技发展司,科技部国家遥感中心,中国地质调查局,中国地质大学(北京)、爱尔兰戈尔韦大学、老挝地质矿产局等部门和单位的代表参会。

“化学地球:全球地球化学观测网与数字化学地球”项目首期为3年,依托中国地质调查局地球物理地球化学勘查研究所建立的联合国教科文组织全球尺度地球化学国际研究中心(以下简称国际中心)组织实施,旨在通过建立地球化学观测网和数字化学地球平台,为全球自然资源和环境的可持续发展服务。

国际中心首席科学家、项目共同主席王学求介绍,该项目已建立了指导委员会、执委会、项目办公室及各洲工作组。项目的启动为“化学地球”国际大科学计划提供了广阔的展示平台和更多合作机会,有助于更好地理解地球系统的化学过程和相互作用,为应对全球性的环境和资源挑战提供更科学的决策依据。下一步,国际中心将深化国际交流合作,共享数据、资源和技术,加强对地球系统中化学过程的理解和研究。积极探索新方法和新技术,推动地球化学研究的数字化转型升级,聚焦人工智能、大数据分析等技术发展,提升地球化学研究水平。加强“化学地球”在资源环境保护利用和绿色发展中的应用,加强全球地球化学数据中心平台建设,提高地球化学数据共享服务和智能化水平,搭建交流合作平台。

据悉,地球观测组织是地球观测领域权威的政府间国际组织,成立于2005年2月。该组织的目标是制定和实施全球地球综合观测系统十年执行计划,建立综合、协调和可持续的全球地球综合观测系统,更好认识地球系统,为管理决策提供从观测数据到应用产品的信息服务。

脚注

http://www.goldsci.ac.cn/article/2023/1005-2518/1005-2518-2023-31-3-423.shtml

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