辽东地区早白垩世丁家堡子岩体萤石成矿规律研究

    Fluorite metallogenic regularity of the Early Cretaceous Dingjiapuzi intrusion in eastern Liaoning Province

    • 摘要: 在充分利用以往基础地质调查和矿产勘查成果资料的基础上,结合对相同类型萤石矿床的综合研究,通过在调查区内开展地质、遥感、物探、化探、槽钻探等工作手段,初步查明了该区与萤石矿相关的成矿地质背景、成矿规律、物化探特征,圈定出萤石及多金属矿体.萤石矿赋存在早白垩世丁家堡子岩体的断裂带中,断裂活动通过热液运移通道的建立和构造应力的释放,为萤石矿化作用提供了必要的能量条件和赋存环境.萤石矿床类型为硅酸盐中的充填型脉状萤石矿床,属浅成低温热液成矿,萤石矿石中普遍伴生有低品位方铅矿和闪锌矿.通过对本区萤石矿床控矿断裂的地质及物化探特征进行研究,初步总结出本地区萤石及多金属矿成矿规律.

       

      Abstract: Based on previous achievements in basic geological surveys and mineral exploration, with comparative studies on fluorite deposits of the same type, this study employs a multi-method approach including geological survey, remote sensing, geophysical and geochemical exploration, trenching and drilling within the study area, which has preliminarily identified the ore-forming geological setting, metallogenic regularity, and geophysical-geochemical exploration characteristics related to fluorite deposits, and has delineated fluorite and polymetallic ore bodies. The fluorite deposit is hosted within the fault zones of Early Cretaceous Dingjiapuzi intrusion. Fault activities constructed pathways for hydrothermal fluid migration and released tectonic stress, thereby providing the necessary energy and occurrence environment for fluorite mineralization. The fluorite deposit is classified as fissure-filling vein-type in silicate rocks, formed under epithermal condition, with fluorite ores commonly associated with low-grade galena and sphalerite. Through the study of geological, geophysical, and geochemical characteristics of ore-controlling faults, preliminary conclusions are drawn regarding the metallogenic regularity of fluorite and polymetallic mineralization in the area.

       

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