| 玲珑金矿黄铁矿标型特征及其大纵深变化规律与找矿意义 |
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| 引用本文： | 申俊峰,李胜荣,马广钢,刘艳,于洪军,刘海明.玲珑金矿黄铁矿标型特征及其大纵深变化规律与找矿意义[J].地学前缘,2013,20(3):55-75. |
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| 作者姓名： | 申俊峰 李胜荣 马广钢 刘艳 于洪军 刘海明 |
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| 作者单位： | 1. 中国地质大学(北京) 地球科学与资源学院, 北京 100083;
2. 辽河油田 金马油田开发公司, 辽宁 盘锦 124010;
3. 浙江大学 地球科学系, 浙江 杭州 310007;
4. 中国五矿集团公司 投资管理部, 北京 100010 |
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| 基金项目： | 中国地质调查局地质大调查项目，国家自然科学基金重点项目 |
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| 摘 要： | 玲珑金矿床是胶东地区最大的石英脉型金矿床之一。经过近50年的开采，资源量几近枯竭，因此开展深部资源量评价和找矿预测具有重要实际意义。笔者基于成因矿物学与找矿矿物学理论，采用矿物学和矿物地球化学方法对主要载金矿物黄铁矿的标型特征进行了系统研究，结果表明黄铁矿标型特征具有如下重要找矿意义：(1)细粒不规则五角十二面体或复杂聚形黄铁矿晶体含金性高；(2)黄铁矿S/Fe比值随矿体延深有增高趋势；(3)黄铁矿微量元素总量高是富矿段的找矿标志，其中黄铁矿稀土元素特征显示成矿物质具深源特征；(4)西山矿区55号脉P型黄铁矿出现率多在60%以上、剥蚀度为36.67%~47.73%，指示该矿脉向下仍有良好的找矿前景；(5)东山矿区自上而下黄铁矿微量元素组合(As+Sb+Te)、(Cu+Pb+Zn)和(Co+Ni+Ti+Cr)沿垂向呈旋回震荡变化规律，同时P型黄铁矿平均出现率39.63%，剥蚀度为32.92%~75.40%，指示-770 m标高以下仍具较好的找矿潜力；(6)东山大开头矿区47号脉黄铁矿热电性填图结果显示，-670 m标高以下，第93至75勘探线之间及第72至63勘探线之间具有良好的找矿前景。上述黄铁矿标型特征对于玲珑金矿床深部找矿评价具有重要指导意义。
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| 关 键 词： | 黄铁矿 标型特征 深部预测 玲珑金矿 胶东 |
| 收稿时间： | 2013-05-03 |
| 修稿时间： | 2013-05-07 |
Typomorphic characteristics of pyrite from the Linglong gold deposit: Its vertical variation and prospecting significance |
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| SHEN Junfeng,LI Shengrong,MA Guanggang,LIU Yan,YU Hongjun,LIU Haiming.Typomorphic characteristics of pyrite from the Linglong gold deposit: Its vertical variation and prospecting significance[J].Earth Science Frontiers,2013,20(3):55-75. |
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| Authors: | SHEN Junfeng LI Shengrong MA Guanggang LIU Yan YU Hongjun LIU Haiming |
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| Institution: | 1.School of Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing 100083,China 2.Jinma Petrolum Development Company,Liaohe Oil Field,Panjin 124010,China 3.Department of Earth Sciences,Zhejiang University,Hangzhou 310007,China 4.Investment Mangement Department,China Minmetals Corporation,Beijing 100010,China |
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| Abstract: | Linglong Gold deposit is one of largest quartz vein gold deposits in Jiaodong region.Its resources quantity was seriously reduced by about 50 years mining,so it is very important to evaluate the deep resources potential and prospecting.Based on genetic and prospecting mineralogy theory,the pyrite which is main mineral loaded gold has been studied systemtically on the typomorphic characteristics by the mineralogy and mineral geochemistry methods.The results showed that the following typomorphic characteristics of the pyrite are very significant for prospecting:(1) the fine grain pyrite with irregular pyritohedron or complicated combinate form are gold enriched;(2) the S/Fe value increases with depth increasing;(3) high total quantities of trace elements in pyrite is one of important signature for prospecting enriched gold body,and the rare earth elements characteristics showed that the pyrite came from the earth deep;(4) the occurrence rate of the P-conductor type pyrite are more than 60% for the gold vein No.55 in the Western Mountain mine area,and the denudation degree is about 36.67%-47.73%,which means that the prospecting potential will be better in deep of the vein;(5) the trace element(As+Sb+Te),(Cu+Pb+Zn) and(Co+Ni+Ti+Cr) assemblies in pyrite are varied as cyclic oscillation along vertical in the Eastern Mountain area,and the occurrence rate of the P-conductor type pyrite is more than 39.63% in average,and the denudation degree is about 32.92%-75.40%,suggesting that the prospecting potential will be better in deep of the area;and(6) the thermoelectricity mapping of pyrite for the gold vein No.47 at Dakaitou in the Eastern Mountain area was carried out,and the result showed that great prospecting potential exists under-770 m elevation between exploration line 93 and 75,also between exploration line 72 and 63.All the typomorphic characteristics of the pyrite mentioned above are very significant for deep gold prospecting in Linglong gold mine. |
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| Keywords: | pyrite typomorphic characteristics deep prospecting Linglong gold deposit Jiaodong area |
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