小岩体成(大)矿理论与实践  

Theory and Practice of Small Intrusive Mineralization

作　　者：汤中立[1] 段俊[1] 徐刚[1] 钱壮志[1] 闫海卿[1] 焦建刚[1] 陈阳阳[1] TANG Zhong-li;DUAN Jun;XU Gang;QIAN Zhuang-zhi;YAN Hai-qing;JIAO Jian-gang;CHEN Yang-yang(School of Earth Science and Resources,Chang'an University,Xi'an 710054,Shaanxi,China)

机构地区：[1]长安大学地球科学与资源学院,陕西西安710054

出　　处：《地球科学与环境学报》2023年第5期1015-1025,F0002,I0001-I0008,共20页Journal of Earth Sciences and Environment

基　　金：中国工程院战略研究与咨询项目(2023-XZ-20);陕西省自然科学基础研究计划项目(2023-JC-YB-224,2022JM-169)。

摘　　要：镍、铜、铂族、钨、锡、钼等关键矿产主要产于小岩体和/或附近的围岩中。系统阐述了小岩体成(大)矿的机制,并以岩浆型Cu-Ni-PGE硫化物矿床为例,总结成矿理论的主要科学问题;依据小岩体成(大)矿理论指导找矿突破实例,针对镁铁—超镁铁质岩体,从地质、物探、化探、遥感等信息中总结成矿要素,提出了快速筛选含矿岩体的评价方法。大量勘查成果表明:小岩体成(大)矿理论对地质找矿具有重要指导意义。In the new round of strategic breakthrough in mineral prospecting,critical mineral resources,such as Ni,Cu,PGE,W,Sn and Mo,are mainly produced in the small intrusions and/or their adjacent country rocks.The mechanism of“small intrusive mineralization”was systematically explained;the main scientific issues of the theoretical system,such as the characteristics of the source and the evolution process of the ore-forming magma and/or hydrothermal fluid,the mass balance of the ore-bearing intrusion,and the emplacement depth,uplift height,erosion degree of the ore deposits,were discussed.By introducing examples of mineral prospecting breakthroughs guided by the theory of“small intrusive mineralization”,a three-step evaluation method for mafic-ultramafic intrusion was proposed to screen out the ore-bearing intrusion quickly and economically by grasping the key information elements from a variety of geology,geophysics,geochemistry,and remote sensing imagery.Exploration results to date indicate that the theory of“small intrusive mineralization”has enormous prospective potential.

关 键 词：岩浆(热液)矿床 小岩体成(大)矿 成矿机制 找矿突破 Cu-Ni-PGE硫化物矿床 镁铁—超镁铁质岩体 成矿要素 评价方法 

分 类 号：P612[天文地球—矿床学]