| 邹欣桐.延边刺猬沟金矿Ⅰ号矿脉地质与元素地球化学特征及其找矿意义[J].地质与勘探,2014,50(5):823-832 |
| 延边刺猬沟金矿Ⅰ号矿脉地质与元素地球化学特征及其找矿意义 |
| Geological and elemental geochemical characteristics of the ore vein No.1 in the Ciweigou gold deposit, Yanbian area and their exploration significance |
| 投稿时间：2014-01-11 修订日期：2014-05-10 |
| DOI： |
| 中文关键词: 地质特征 元素地球化学特征 找矿标志 浅成低温热液型金矿 刺猬沟金矿 延边地区 |
| 英文关键词: geological characteristics, elemental geochemical characteristics, exploration indicators, epithermal gold deposit, Ciweigou gold deposit, Yanbia |
| 基金项目:吉林省科技发展计划项目（编号：20120423）和中国地质调查局项目（编号：1212011085485）资助 |
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| 中文摘要: |
| 延边刺猬沟金矿是东北地区低硫化型浅成低温热液型金矿的典型代表。为查明该矿床的矿化富集规律和深部找矿潜力，选择矿区最有工业价值的Ⅰ号主矿脉，在控矿条件和矿化蚀变特征的研究基础上，对11个成矿指示元素的相关性、浓度分带、元素组合的分带序列等地球化学特征进行系统分析。结果表明，Ⅰ号矿脉赋存于中生代陆相火山岩系中，形态、产状和规模明显受破火山口内放射状张扭性断裂（NNE向为主）控制，绿泥石化（常伴随碳酸盐化）是高品位矿段的围岩蚀变标志；不同中段的矿石（矿化岩石）中，Au除与Hg和Ag呈弱相关外，与其它元素均呈负相关，结合因子分析结果认为，本矿床中除Au外，基本没有其它伴（共）生有用组分。根据成矿相关元素的垂向变化及元素浓度分带认为，刺猬沟金矿Ⅰ号矿脉具有分段富集特征，其中220~260m和 420~450m标高为矿化富集地段。 |
| 英文摘要: |
| The Ciweigou gold deposit in the Yanbian area is typical of low sulphidation (LS) epithermal gold deposits in northeastern China. To determine the mineralization enrichment rules and deep exploration potential of this deposit, the ore vein No.1,which has the highest industrial value in the ore area, is chosen as the study object. Based on previous work on ore-controlling conditions, gold mineralization and alteration characteristics, we analyze the geochemical characteristics of this deposit such as correlations of the metallogenic indicator elements, concentration zoning, and zoning sequence of elements combination. The results indicate that the ore veinNo.1 occurs in the Mesozoic continental volcanic rocks, which is obviously controlled by NNE-trending transextensional faults in calderas. The chlorite alteration (often accompanied by carbonation) is considered to be an alteration sign of high grade ore blocks. The analysis of eleven trace elements in ores from different levels shows that only Hg and Ag have weak positive correlation with Au, while negative correlation are present between Au and other elements. Combining with the result of factor analysis, this work suggests, with the exception of Au, there is no other useful associated element. According to the vertical variation of metallogenic elements and element concentrations zonation，it can be concluded that the ore vein No.1 in the Ciweigou gold deposit is featured by the segmented enrichment, with the mineralization concentrated at 220~260m and 420~450m levels. |
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