| 景国庆,于文明,张朋,付海中,徐洪波,唐泽熙,黄鸿新.内蒙古上十二份子金矿床地质特征及找矿前景[J].矿产勘查,2025,16(4):741-751 |
| 内蒙古上十二份子金矿床地质特征及找矿前景 |
| Geological characteristics and prospecting prospects of Shangshierfenzi gold deposit, Inner Mongolia |
| 投稿时间：2023-10-15 |
| DOI：10.20008/j.kckc.202504006 |
| 中文关键词: 地质特征 激电中梯剖面 找矿前景 金矿床 上十二份子 |
| 英文关键词: geological characteristics induced polarization profile exploration prospects gold deposit Shang-shierfenzi |
| 基金项目:本文受内蒙古上十二份子金矿床资源储量核实项目(2022-13)资助。 |
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| 摘要点击次数: 2018 |
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| 中文摘要: |
| 内蒙古上十二份子矿床是近年来在乌拉山—大青山金成矿带上发现的一个小型金矿床。为了满足矿山持续生产需求，同时为深部及外围进一步探矿工作提供依据，本文通过矿山地质测量、槽探、钻探、物探等手段，基本查明了 5条金工业矿体规模及地质特征。研究成果显示，上十二份子金矿体赋存于新太古界色尔腾山群柳树沟组斜长黑云片岩、吕梁期中细粒碱长花岗岩及角砾岩内；硅化蚀变是多期次、多阶段热液作用的结果，其中硅化及黄铁矿化与金成矿关系最为密切；主矿体呈脉状产出，控制长度 330 m，控制斜深 189 m，受 NEE、NE、近 SN向断裂构造控制，其形成是区域上韧性剪切作用与岩浆活动共同作用的结果，成矿时代为华力西期—印支期，成矿时间延续较长；地球物理激电中梯剖面测量显示视极化率中高异常区可能是寻找金矿体的有利位置。 |
| 英文摘要: |
| The Shangshierfenzi deposit in Inner Mongolia is a small gold deposit discovered in the Wulashan-Daqingshan gold mineralization belt in recent years. In order to meet the continuous production demands of the mine and provide a basis for further exploration in the deep and peripheral areas, this paper has basically identified thescale and geological characteristics of five gold industrial ore bodies through means such as mine geological survey,trench exploration, drilling and geophysical exploration. The research results show that the upper twelve gold orebodies are located in the plagioclase black cloud schist of the Liushugou Formation in the Sertengshan Group of theNeoarchean, the fine-grained alkali-feldspar granites and breccias of the Middle Luliang period. Silicification al-teration is the result of multiple stages and periods of hydrothermal action, among which silicification and pyrite for-mation are most closely related to gold mineralization. The main ore body occurs in a vein-like pattern, with a con-trolled length of 330 meters and a controlled oblique depth of 189 meters. It is controlled by the NEE, NE and near-Sn direction fault structures. Its formation is the result of the combined action of ductile shear and magmatic activi-ties in the region. The mineralization era is the Valisian -Instician period, and the mineralization time lasts for arelatively long period. The geophysical electroexcited middle ladder profile measurement shows that the medium andhigh anomaly area of the apparent polarizability may be a favorable location for the search of gold ore bodies. |
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