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现代地质 ›› 2025, Vol. 39 ›› Issue (03): 570-587.DOI: 10.19657/j.geoscience.1000-8527.2024.136

• 机器学习与矿物学应用 • 上一篇    下一篇

磁铁矿和黄铁矿的热电阻特征及找矿启示: 以白云鄂博铁矿区和安徽黄屯铜金矿区为例

张竞元1,2(), 申俊峰1,*(), 赵永健3, 杨永强1, 王昭静4, 陈强5, 卿敏6, 胡凯2, 陈满6, 王浩阳1, 林浩1, 唐赧钰1, 郑新栋1   

  1. 1.中国地质大学(北京)地球科学与资源学院,北京 100083
    2.中国石油天然气股份有限公司华北油田分公司,河北 任丘 062552
    3.安徽省金鼎矿业股份有限公司,安徽 合肥 231551
    4.包头钢铁(集团)有限责任公司矿山研究院(有限责任公司),内蒙古 包头 014010
    5.北京中育神州数据科技有限公司,北京 100043
    6.比优探索(北京)资源勘查有限公司,北京 100101
  • 出版日期:2025-06-10 发布日期:2025-07-03
  • 通信作者: *申俊峰,男,博士研究生,教授,1962年出生,主要从事成因矿物学与找矿矿物学方面的研究工作。Email:shenjf@cugb.edu.cn
  • 作者简介:张竞元,女,硕士研究生,1994年出生,主要从事矿床学方面的研究工作。Email:jy_hyuga@qq.com
  • 基金资助:
    包头钢铁(集团)有限责任公司矿山研究院(有限责任公司)2021年A类重点项目(BGKY-ZH-2021-Z-017);比优探索(北京)资源勘察有限公司企事业单位-横向包干制项目(Z083612022042)

Magnetite and Pyrite Thermal Resistance Characteristics and Their Implications for Prospecting: Taking Bayan Obo Iron Mining Area and Anhui Huangtun Copper-gold Mining Area as Examples

ZHANG Jingyuan1,2(), SHEN Junfeng1,*(), ZHAO Yongjian3, YANG Yongqiang1, WANG Zhaojing4, CHEN Qiang5, QING Min6, HU Kai2, CHEN Man6, WANG Haoyang1, LIN Hao1, TANG Nanyu1, ZHENG Xindong1   

  1. 1. School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083, China
    2. Huabei Oilfield Company, CNPC, Renqiu, Hebei 062552, China
    3. Anhui Jinding Mining Corporation, Ltd., Hefei, Anhui 231551, China
    4. Minging Research Institute of Baotou Steel(Group)Corporation, Baotou, Inner Mongolia 014010, China
    5. Beijing Zhongyu Shenzhou Data Technology Corporation, LTD, Beijing 100043, China
    6. Biyou Exploration (Beijing) Resources Exploration Corporation, LTD, Beijing 100101, China
  • Published:2025-06-10 Online:2025-07-03

摘要: 磁铁矿和黄铁矿是金属矿床广泛存在的典型矿物,其电阻属性特别是恒定活化温度下的电阻值目前在找矿方面的应用少有研究。采用BHMR-08型变温热电阻仪,在内蒙古白云鄂博铁矿区和安徽黄屯铜金矿区分别针对磁铁矿和黄铁矿开展了电阻率测试。结果表明:在白云鄂博铁矿区的东部深部,存在与金属硫化物相关的磁铁矿电阻率低值区,该区磁铁矿电阻率多数小于9×10-4 Ω·m,且主要为岩浆成因磁铁矿,结合前人研究,认为该区可能存在岩浆通道,是岩浆型磁铁矿富集区,深部具有较大找矿潜力。安徽黄屯铜金矿区的角砾岩筒内黄铁矿与角砾岩筒外黄铁矿电阻率差异明显。其中,角砾岩筒内黄铁矿的电阻率值相对较大且分布范围宽泛,最高值可达20~40 Ω·m;而角砾岩筒外的黄铁矿电阻率值相对较小且分布范围较窄,多小于10 Ω·m。因此,黄铁矿电阻率值是有效区分角砾岩筒内部和外部黄铁矿的重要物性标型特征,可为进一步找寻金矿起到启示作用。

关键词: 热电阻特征, 磁铁矿, 黄铁矿, 白云鄂博矿区, 安徽黄屯铜金矿区

Abstract:

Magnetite and pyrite are typical minerals that exist widely in metal deposits, and their resistance properties, especially at constant activation temperature, are rarely studied in ore prospecting. The resistivity of magnetite and pyrite in Bayan Obo iron mining area of Inner Mongolia and Huangtun copper-gold mining area of Anhui was measured by BHMR-08 variable temperature thermal resistance meter. The results show that there is a low resistivity area of magnetite related to metal sulfides in the eastern depth of Bayan Obo iron mine area. The resistivity of magnetite in this area is mostly less than 9×10-4 Ω·m, and it is mainly magmatic origin magnetite. Combined with previous studies, it is believed that there may be a magmatic channel in this area, which is a magmatic magnetite rich area and has great prospecting potential in the deep. The resistivity difference between the pyrite in the breccia pipe and the pyrite outside the breccia pipe is obvious in Huangtun copper-gold deposit area of Anhui Province. Among them, the resistivity value of pyrite in the breccia pipe is relatively large and the distribution range is wide, and the highest value can reach 20-40 Ω·m. The resistivity of pyrite outside the breccia tube is relatively small and the distribution range is narrow, mostly less than 10 Ω·m. Therefore, the resistivity value of pyrite is an important physical typomorphic characteristic to distinguish pyrite inside and outside breccia pipe effectively, which plays a certain role in the search for gold deposits.

Key words: thermal resistance characteristics, magnetite, pyrite, Bayan Obo deposit, Anhui Huangtun copper-gold deposit

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