| 谯常,张厚松,胡歆睿,何犇,胡荣,邬晓芳,邓毅,杨正文.黔东北务川洋红坳地区萤石矿床地质特征及控矿因素分析[J].贵州地质,2026,43(1):1-9 |
| 黔东北务川洋红坳地区萤石矿床地质特征及控矿因素分析 |
| Analysis on Geological Characteristics and Ore Control Factors of Fluorite Deposit in Yanghongao Area in Wuchuan，Northeast Guizhou |
| 投稿时间：2025-12-02 |
| DOI： |
| 中文关键词: 萤石矿床 地质特征 控矿因素 找矿标志 洋红坳地区 |
| 英文关键词:Fluorite deposit Geological characteristics Ore control factors Prospecting indicator Yanghongao area |
| 基金项目:贵州省地矿局地质科研项目(黔地矿科合〔2024〕8号、黔地矿科合〔2024〕5号)资助 |
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| 中文摘要: |
| 黔东北洋红坳地区是我国重要的中低温热液型萤石矿富集区之一，加强萤石矿床的区域地质背景、矿床地质特征及其控矿因素的分析，对研究区及邻区进一步寻找萤石矿显得较为重要。研究表明，萤石矿主要赋存在奥陶系桐梓组第三段灰岩、白云质灰岩及红花园组生物屑灰岩构造裂隙带中，湄潭组粘土岩建造是含矿热液的遮挡层，控制了成矿流体纵向及横向运移，所见矿体均分布在遮挡层界面以下；矿体严格受北东向断裂控制，断裂自身并不直接赋矿，而是与其相交的北西向断层或节理直接控制了萤石矿的产出与分布，且萤石矿均赋存在北西向与北东向构造叠加附近区域的北西向构造裂隙或层间裂隙中；矿石结构主要有镶嵌结构及细脉状结构，矿石构造有块状构造、角砾状构造，围岩蚀变有萤石矿矿化、白云石化、方解石化及硅化；成矿物质Ca的来源具多源性，F的来源层主要是富含F的上震旦统陡山沱组至下寒武统明心寺组。据此建立了区域成矿模式，并总结了找矿标志主要有地层及构造标志、地球化学标志、围岩蚀变标志、遗留采坑及转石直接标志。总体而言，研究区萤石矿具地层与构造双重控矿的特点，加强萤石矿床地质特征及控矿因素的研究，为黔东北地区进一步寻找萤石矿具一定勘探意义。 |
| 英文摘要: |
| Yanghongao area of northeast Guizhou is one of the most important middle and low temperature hydrothermal fluorite concentration area，further analyses on the regional background，deposit geologic characteristic and ore control factor is very important for fluorite exploration in the study area and nearby areaThe study indicates that fluorite mainly occurs in the 3rd section of Tongzi formation，Ordovician system and carbonate rock structural zone of Huagangyan formation，the clay rock formation of Meitan formation is barrier bed of ore bearing hydrothermal solution，it controls the vertical and parallel translation of mineral solution，all the known orebody distributes under the barrier bedThe orebody is controlled strictly by NE fault，the fault doesn’t occur ore directly，the intersecting NW fault or joint controls the occurrence and distribution of fluorite directly，the fluorite occurs superimposed NW and NE area and NW structural fracture and cracking layerThe main ore structures are mosaic structure，joint vein structure and solution- replacement structure，the ore texture are massive structure and brecciated structure，the wall rock alteration have fluorite mineralization，dolomitization，calcitization and silicification，the source of mineral material Ca is polybasic，the source layer of F is from Doushantuo formation of Upper Sinian to Mingxinshi formation of Lower CambrianSo the regional metallogenic are established，the prospecting criteria are ensured to be stratum，structural mark，geochemical mark，wall rock alteration mark，remaining pit and boulder direct markGenerally，the fluorite in the study area has the features of double ore control of stratum and structure，Strengthening the study of deposit geological characteristic and ore control factor will be important for further fluorite exploration in northeast Guizhou |
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