| 董少波,马林霄,李庆哲.河北下营坊金矿区大东山矿床地质特征及成因探讨[J].矿产勘查,2015,6(3):254-261 |
| 河北下营坊金矿区大东山矿床地质特征及成因探讨 |
| Geological characteristics and discussion on genesis of the Dadongshan gold deposit in Xiayingfang,Hebei |
| |
| DOI： |
| 中文关键词: 大东山矿床 地质特征 接触交代—热液型金矿床 矿床成因 河北 |
| 英文关键词: Dadongshan gold deposit geological characteristics metasomatic-hydrothermal gold deposit deposit genesis Hebei |
| 基金项目: |
|
| 摘要点击次数: 3156 |
| 全文下载次数: 1371 |
| 中文摘要: |
| 河北下营坊金矿区位于永安—下营坊—毛家沟构造岩浆岩活动带的金多金属成矿带上。矿区划分为4个矿床,即下金宝沟矿床、东山—大东山矿床、水泉沟—西岔矿床和梁根—南梁矿床。大东山矿床共圈出1个矿体,矿体形态简单,呈向斜形态产出在长城系高于庄组含砂白云岩和含铁白云岩中。矿体有用组分分布较均匀,在垂向上,矿体品位呈现由低到高再逐渐变低的特点；在勘探线方向上,矿体品位呈现两翼高核部低的特点；在向斜轴走向上,矿体品位变化不大。矿体厚度较稳定,以花岗斑岩顶部为中心,向四周有减薄的趋势。通过与相邻矿床对比,结合矿床地质特征,认为大东山矿床为接触交代—热液型金矿床。 |
| 英文摘要: |
| The Xiayingfang gold ore deposit is located in the gold polymetallic belt in Yongan-Xiayingfang-Maojiagou tectonicmagmatic activity zone. The deposit area is divided into four ore deposits, namely Jinbaogong deposit, Dongshan-Dadongshan deposit, Shuiquangou-Xicha deposit, and Lianggen-Nanliang deposit. One gold ore body was outlined in the Dadongshan deposit, the orebody shape is simple,and occurs in the Gaoyuzhuang formation sand dolomites and iron dolomites of Changcheng Group as incline form. The useful components are uniformly distributed in the ore body. In the vertical direction, the gold grade is changed from low to high and then gradually lower. In the exploration line direction, the gold grade intwo wings is higher than that in the core. In the synclinal axis direction, the gold grade of ore body has a little change. The thickness of ore body is relatively stable, thickest on the top of granite porphyry,and thinner to the surrounding areas. By comparison with the adjacent deposits and in combination with the geological characteristics of the deposit,it is believed that the Dadongshan gold deposit is a contact metasomatic-hydrothermal type gold deposit. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|