| 鲜绍军,罗俊峰,黄艺,袁睿,谢选雄.贵州东北部地区萤石矿地质特征、控矿因素及矿床成因[J].地质找矿论丛,2024,39(2):200-208 |
| 贵州东北部地区萤石矿地质特征、控矿因素及矿床成因 |
| Geological characteristics, ore controlling factors and genesis of fluorite deposits in Northeast Guizhou |
| 投稿时间：2023-11-01 |
| DOI：10.6053/j.issn.1001-1412.2024.02.008 |
| 中文关键词: 萤石矿 地质特征 控矿因素 矿床成因 贵东北地区 |
| 英文关键词:fluorite deposit geological characteristics ore-controlling factors genesis of deposit Northeast Guizhou province |
| 基金项目:贵州省新一轮找矿突破战略行动地勘基金项目(编号:黔自然资函[2022]632 号)资助。 |
|
| 摘要点击次数: 83 |
| 全文下载次数: 155 |
| 中文摘要: |
| 贵东北下奥陶统碳酸盐岩型萤石矿为贵州主要萤石矿类型之一。本文选取了双河、红花园两个具有代表性的萤石矿床,对其地质特征、控矿因素、矿床成因进行了研究。结果表明:贵州东北萤石矿受地层、构造、岩性的控制;下奥陶统红花园组、桐梓组生物碎屑灰岩层是最有利赋矿层位,湄潭组在成矿过程中起物理隔挡的作用;发育于NE-NNE向复背斜核部同向断裂带为导矿构造,旁侧的NE向、NW向次级断裂为配矿构造,发育于复背斜两翼红花园组、桐梓组生物碎屑灰岩层中的NW-NWW向断裂为储矿构造;NE-NNE向复背斜两翼符合导矿-配矿-容矿构造组合的红花园组、桐梓组是有利的赋矿部位,已发现的储矿构造向湄潭组延伸的方向是寻找隐伏矿体的重要方向;压力和温度的变化及地层岩性的差异是贵州东北萤石矿从热液中沉淀的主要因素,属中低温热液成因断裂充填型为主的萤石矿床。 |
| 英文摘要: |
| The Lower Ordovician carbonate fluorite deposit in northeastern Guizhou province is one of the main types of fluorite deposits in Guizhou province. This paper deals with geological characteristics, ore controlling factors and genesis of the representative Shuanghe and Honghuayuan fluorite deposits in Guizhou province. The bioclastic limestone of the Lower Ordovician Honghuayuan formation and Tongzi formation are the most favorable ore-bearing horizons and the Meitan formation plays a physical barrier role in the mineralization process. NE-NNE fault zone developed in the core of the NE-NNE anticlinorium is ore-guiding structure, NE and NW secondary faults beside the anticlinorium are ore-distributing structure, the NW-NWW faults developed in the bioclastic limestone of the Honghuayuan formation and Tongzi formation on both sides of the anticlinorium ore-storing structures. Honghuayuan formation and Tongzi formation at the two limbs of the anticlinorium meet requirement of the guiding, distributing and storing conditions and Tongzi formation the favorable ore-hosting stratum. Blind ore prospecting should be focused on the extension direction of the known ore-storing structure to Meitan formation. The variation of pressure, temperature lithology is the main factors of fluorite precipitation from hydrothermal fluid. The fluorite deposits in Northeast Guizhou province belong to medium low temperature hydrothermal fracture filling type. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
