| 内蒙古翁牛特旗硐子铅锌矿构造控矿特征与找矿标志 |
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| 引用本文： | 姜万德,李顺达,张淼,暴永泉.内蒙古翁牛特旗硐子铅锌矿构造控矿特征与找矿标志[J].世界地质,2015,34(4):971-983. |
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| 作者姓名： | 姜万德 李顺达 张淼 暴永泉 |
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| 作者单位： | 1. 内蒙古矿业 (集团) 有限责任公司，呼和浩特 010051; 2. 吉林大学 地球科学学院，长春 130061; 3. 吉林省第四地质调查所，吉林 通化 134001 |
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| 摘 要： | 硐子铅锌矿床位于华北板块北缘成矿带与大兴安岭南段成矿带的叠置区。矿床主要受近东西向断裂控制,属于中低温热液脉型矿床。主控矿断裂F1-1成矿前表现为压性特征,成矿期表现为左行张扭特征,在断裂带产状变陡、走向偏北地段含矿性较好。与矿脉空间分布关系密切的燕山早期花岗斑岩为成矿提供了热动力和含矿热液。矿石中方铅矿、黄铁矿单矿物δ34SCDT值为-4.8×10-3~1.4×10-3,接近陨石值,表明硫主要来源于岩浆,铅锌含量高的围岩安山岩、燕山早期闪长岩、花岗闪长岩和花岗斑岩可能提供了主要的成矿物质。根据矿物组合空间变化特点推测含矿热液在矿区内自西部深层向东部浅层运移。花岗斑岩体、地表及浅部蜂窝状硅质破碎带、铁锰帽可作为本区找矿的直接标志。
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| 关 键 词： | 内蒙古 硐子铅锌矿床 地质特征 控矿因素 找矿标志 |
Tectonic ore- control characteristics and prospecting indicators of Dongzi Pb-Zn deposit in Wengniute Banner，Inner Mongolia |
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| JIANG Wan-De,LI Shun-Da,ZHANG Miao,BAO Yong-Quan.Tectonic ore- control characteristics and prospecting indicators of Dongzi Pb-Zn deposit in Wengniute Banner，Inner Mongolia[J].World Geology,2015,34(4):971-983. |
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| Authors: | JIANG Wan-De LI Shun-Da ZHANG Miao BAO Yong-Quan |
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| Institution: | 1. Inner Mongolia Mining (Group) Co． Ltd，Hohhot 010051，China; 2. College of Earth Sciences，Jilin University，Changchun 130061，China; 3. The Fourth Geological Survey of Jilin Province，Tonghua 134001，Jilin，China |
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| Abstract: | Dongzi Pb-Zn deposit，located in overlapping area between the northern margin of North China Plate metallogenic belt and the southern section of Great Hinggan Mountains metallogenic belt，is mainly controlled by EW trending faults and belongs to epi- mesotherma vein- type deposits． The mainly ore- controlling fault F 1－1 re presents compressive characters in premineralizing stage and sinistral tensile characters in mineralizing stage． The mineralization is rich in the location where the occurrence changes steeply and trending towards north． Granite- por- phyry bodies in early Yanshan epoch，closely related to the spatial distribution of ore bodies，provided thermal power and ore-bearing hydrothermal solution for mineralization． The δ 34 S CDT of galena and pyrite in ore are －4. 8 × 10 －3 ～1. 4 ×10 －3 ，similar to the meteorite value，showing sulfur mainly derived from magma． The surrounding rock andesite，diorite，granodiorite，granite porphyry with a high content of lead and zinc may provide the main ore- forming materials． According to the mineral assemblages varying characteristics in space，we speculate that ore- bearing hydrothermal solution migrated from the western deep section to the eastern shallow section within the mining area． Granite porphyry bodies，honeycomb siliceous fracture zones from the surface layer and ferromanga- nese caps can be the direct prospecting indicators in this area． |
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| Keywords: | Inner Mongolia Dongzi Pb- - Zn deposit geological feature ore- controlling factor prospecting indicator |
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