内蒙古红岭铅锌多金属矿床地质特征
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P618.42;P618.43

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国家重点研发计划项目(2017YFC0601302)


Geological characteristics of Hongling Pb-Zn polymetallic deposit in Inner Mongolia
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    摘要:

    红岭(浩布高)铅锌多金属矿床位于我国大兴安岭南段主峰黄岗-甘珠尔庙成矿带的东北端。该地区成矿地质条件优越,是我国重点矿产勘查区之一。前人对红岭铅锌矿的矿床成因、成矿规律做了大量研究,但对基础地质特征研究不够深入,特别是对矿区主要赋矿围岩的岩石类型、矿区蚀变-矿化的类型及空间分布规律等方面的研究相对薄弱,制约了研究区矿床成因研究及勘察找矿的进展。本文通过详细的野外地质观察、室内岩矿相鉴定及扫描电镜/能谱(SEM/EDS)研究发现,矿区内出露的二叠纪地层除大理岩外,其余均为火山岩和火山碎屑岩,未见正常碎屑岩,与已有勘查资料认识不同,且在片理化二叠系晶屑凝灰岩中发现了由黄铜矿和闪锌矿组成的压力影,表明该区二叠系中可能发育同生的铜、锌矿化。矿区内除矽卡岩型矿化外还存在角砾岩型、热液脉型、碳酸盐交代型等多种矿化类型,为该区找矿提供了新思路。

    Abstract:

    The Southern Da Hinggan Mountains is one of the most important metallogenic belt, where varied types of mineral deposits have been reported over the past few decades. The Hongling(Haobugao) Pb-Zn polymetallic ore deposit is situated in the northeast of Huanggang-Ganzhuermiao polymetallic metallogenic belt, which is located in the southern segment of the Da Hinggan Mountains, Inner Mongolia. The ore genesis and ore controls of the deposit has been widely reported, but the detailed geological work, especially the lithology of the wall rock, and the spatial distribution of mineralization and alteration in the mining area is still weak. Based on the field observation, petrographic and SEM/EDS results of the ore and altered wall rocks, this paper proposed that the Permian of the area comprise of marble and meta-volcanic or volcaniclastic rocks which has been referred to as meta-sedimentary clastic rocks. The discovery of pressure shadow with chalcopyrite and sphalerite aggregate as the core mineral imply a primary copper and zinc mineralization of Permian. Except the dominant skarn mineralization, we also confirmed some other mineralization types in the mining area, including breccia type, hydrothermal veins and carbonate replacement type. Varied types of mineralization provide new idea for the ore prospecting in the area.

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单小瑀,魏良民,任国顺,陈佳德,柳爱新,谢玉玲,2022,内蒙古红岭铅锌多金属矿床地质特征[J].岩石矿物学杂志,41(3):628~642. SHAN Xiao-yu, WEI Liang-min, REN Guo-shun, CHEN Jia-de, LIU Ai-xin, XIE Yu-ling,2022,Geological characteristics of Hongling Pb-Zn polymetallic deposit in Inner Mongolia[J]. Acta Petrologica et Mineralogica,41(3):628~642.

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  • 收稿日期:2021-08-31
  • 最后修改日期:2021-12-02
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  • 在线发布日期: 2022-05-17
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