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| 内蒙古长山壕金矿矿床地球化学特征与成因研究 | |
| 引用本文： | 赵百胜,刘家军,王建平,翟裕生,彭润民,王守光,沈存利.内蒙古长山壕金矿矿床地球化学特征与成因研究[J].现代地质,2011,25(6). |
| 作者姓名： | 赵百胜 刘家军 王建平 翟裕生 彭润民 王守光 沈存利 |
| 作者单位： | 1. 有色金属矿产地质调查中心,北京,100012 2. 中国地质大学地质过程与矿产资源国家重点实验室,北京,100083 3. 内蒙古自治区地质调查院,内蒙古呼和浩特,010020 |
| 基金项目： | 国土资源部地质矿产调查评价项目，教育部长江学者和创新团队计划项目，高等学校科技创新引智计划项目，中国地质调查局地质矿产调查评价专项"覆盖区矿产综合预测" |
| 摘 要： | 长山壕金矿是近年来在内蒙古中部发现的一个大型浅变质碎屑岩型金矿,产于中—新元古代白云鄂博群比鲁特组碳质板岩和千枚岩中,矿体与围岩呈渐变关系。矿石呈硫化物细脉和石英硫化物细脉状,产于地层层理、节理和破碎带中,与地层同步褶皱变形。矿石的微量元素特征与围岩一致,矿石铅同位素为208Pb/204Pb为37.430 8～38.9792,207Pb/204Pb为15.452 2～15.674 1,206Pb/204Pb为17.109～18.921 7,与地层铅同位素接近。流体包裹体以液相包裹体为主,均一温度230～370℃,平均286.8℃;盐度w(NaCl)为6.01%～20.52%,平均10.84%;包裹体水的δD为-108‰～-112‰,δ18O为6.4‰～9.4‰。地质地球化学特征表明成矿物质来自地层,成矿热液主要来自地层水。研究认为长山壕金矿为沉积-变质型金矿,后期的岩浆活动对成矿作用影响较小。 |
| 关 键 词： | 金矿床 地质地球化学特征 沉积-变质 长山壕 内蒙古 |
Geological-Geochemical Characteristics and Genesis of Changshanhao Gold Deposit in Inner Mongolia, China |
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| ZHAO Bai-sheng,LIU Jia-jun,WANG Jian-ping,ZHAI Yu-sheng,PENG Run-min,WANG Shou-guang,SHEN Cun-li.Geological-Geochemical Characteristics and Genesis of Changshanhao Gold Deposit in Inner Mongolia, China[J].Geoscience——Journal of Graduate School,China University of Geosciences,2011,25(6). | |
| Authors: | ZHAO Bai-sheng LIU Jia-jun WANG Jian-ping ZHAI Yu-sheng PENG Run-min WANG Shou-guang SHEN Cun-li |
| Institution: | ZHAO Bai-sheng1,LIU Jia-jun2,WANG Jian-ping2,ZHAI Yu-sheng2,PENG Run-min2,WANG Shou-guang3,SHEN Cun-li3(1.China Non-ferrous Metals Resource Geological Survey,Beijing 100012,China,2.State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Beijing 100083,3.Inner Mongolia Institute of Geological Survey,Hohhot,Inner Mongolia 010020,China) |
| Abstract: | Changshanhao gold deposit is a large metamorphic microclastic rock type gold deposit hosted in carbonaceous slates and phyllites of the Meso-Neoproterozoic Bilute Formation of Bayan Obo Group in central Inner Mongolia.The gold ore bodies are tabular and lenticular and no clear boundary to wall rocks;the ores occur as sulfur veinlets or quartz-sulfide veinlets deformed with strata in beddings,joints and fractures,which consist of simple minerals with weak alterations.The ore and wall rocks have the similar t... |
| Keywords: | gold deposit geological-geochemical characteristic sediment-metamorphism Changshanhao Inner Mongolia |
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