| 冀北两种类型钼矿床地质特征与控矿因素差异性分析 |
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| 关键词:molybdenum deposit genetic type metallogenic age volcanic rocks of Zhangjiakou Formation northern Hebei |
| 基金项目:河北省自然资源厅基金项目(编号: 13000022P00F2D410169J);河北地质大学区域地质与成矿作用重点实验室开放基金(编号: 2020041) |
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| Difference Analysis of the Geological Characteristics and Ore-controlling Factors of Two Types of Molybdenum Deposits in Northern Hebei Province |
| The molybdenum deposits in northern Hebei (Zhangjiakou–Chengde) can be divided into two types. One is mainly distributed in the Yanshan rifting zone in the southern part of the North China Platform. The occurrence time of molybdenum mineralization in this type is similar to the emplacement time of the acid rock mass in the mining area. The metal minerals are mainly molybdenite, surrounding rock alteration is majorly potassic and silicified, and ore-forming fluid is characterized by a high temperature and salinity. The other type is mainly distributed in the Mesozoic volcanic fault basins in the northern margin uplift belt of the North China Platform. The metal minerals of this type are jordisite and melnikovite, which are primarily low-temperature minerals, and they are mostly associated with uranium ore. The surrounding rock alteration is primarily hydromica, fluorite, and melnikovite, and the ore-forming fluids show low temperature and low salinity characteristics. Owing to the lack of suitable molybdenum mineralization dating minerals, the present age test data are mostly limited to uranium mineralization. The test results show that significant differences exist in the rock between uranium mineralization. On the basis of the existing geological data in northern Hebei and its adjacent areas, we reviewed the prevailing geological problems and research status of the aforementioned molybdenum deposits. We emphasized that the ore formation age of the molybdenum deposits is a key problem, which is associated with the mineralization process, genetic type, and deep prospecting potential. |
| LI Sui-min,JIAO Xue-hong,HAN Yu-chou,TANG Tian-song,LI Zi-ye,XING Huan,LI Bin,SUN Zhi-wei,LI Yu-cheng,ZHAO Zhi-bin,ZHUAN Shao-peng,WANG Jing-tao,WANG Jun-ge,YANG Yun,HU Zhi-qiang,SUN Jin-long,ZHAO Jian-liang,LI Ji-chao.2023.Difference Analysis of the Geological Characteristics and Ore-controlling Factors of Two Types of Molybdenum Deposits in Northern Hebei Province[J].Acta Geoscientica Sinica,44(6):967-982. |
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