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CHARACTERISTICS AND METALLOGENIC REGULARITY OF ANTIMONY DEPOSITS IN INNER MONGOLIA |
BAO De-jun1, LI Rui-rui1, XIE Yuan-hong1, CHEN Fang-pu1, CUI Long-sheng2 |
1. Liaoning Chemical Geological Exploration Institute Co., Ltd., Jinzhou 121007, Liaoning Province, China; 2. Inner Mongolia Shengwang Mining Co., Ltd., East Ujimqin Qi 026300, Inner Mongolia, China |
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Abstract Based on the study of geological characteristics of antimony deposits in Inner Mongolia and typical antimony deposits, with comparison of the ore-controlling factors between typical antimony deposits in China, the paper discusses the metallogenic regularity of antimony deposits in Inner Mongolia from the aspects of metallogenic tectonic background, ore-bearing rock series and ore-controlling structure. It is considered that the antimony deposits in Inner Mongolia can be classified into hydrothermal type in clastic strata and volcanic hydrothermal type. The ore-bearing rock series in these deposits were mostly formed in Late Paleozoic Devonian-Permian, with the characteristics of nearly E-W linear distribution. The ore/mineralized bodies are mainly controlled by the nearly E-W-trending fault belt, and the mineralization may be related to the subduction-accretion orogeny during plate collision. The dark fine clastic rock series formed in the reduction conditions of littoral facies, neritic facies, bathyal facies or interactive marine-terrestrial sedimentary environment are the favorable horizon for ore-hosting rocks. The formation of antimony hydrothermal solution may be related to the deep mantle-mantle source tectonic magmatic activity.
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Received: 10 January 2022
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