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通过裂隙统计和测量,分析裂隙充填物等裂隙岩相学特征,探讨裂隙构造与钨富集成矿关系。研究认为,本区裂隙分为4期,裂隙倾角(中轴夹角)分别为9°、29°、47°、69°。白钨矿主要赋存在层间裂隙中,其细脉倾角在45°左右,与地层构造变形面理大致相同,部分白钨矿细脉赋存在穿层裂隙组中,细脉倾角在60°左右。白钨矿富矿体和裂隙储矿空间受黑云母闪长岩侵入岩体控制较为明显,在黑云母闪长岩侵入岩体附近,碎裂岩化相较为强烈,平均裂隙密度达到35条/m,局部裂隙密度最高可达110条/m,白钨矿富集在黑云母闪长岩体的外接触带;裂隙充填物类型包括高温到低温矿物,其特征表明裂隙充填物具有多期次形成的特征;白钨矿富集成矿主要与电气石化和硅化密切相关,推测白钨矿富集成矿主要受黑云母闪长岩有关的岩浆热液成矿作用和裂隙密度大小耦合关系控制,本矿区新发现的钨矿具有较好找矿前景。
Through the statistics and measurement of fractures, the characteristics of fractures such as fissures and fissures are analyzed, and the relationship between fractures and tungsten enrichment mineralization is discussed. According to the study, the fissures in this area are divided into 4 phases, and the fissure angle (central axis included angle) is 9 °, 29 °, 47 ° and 69 °, respectively. The scheelite mainly exists in interlaminar fissures with a dip angle of 45 ° or so, which is roughly the same as that of stratigraphic deformation. Some scheelite veins exist in the interbedded fissures, and the dip angle of veins is about 60 ° . The scheelite rich ore body and fissure ore storage space are dominated by biotite diorite intrusive rock mass. In the vicinity of intrusive rock mass of biotite diorite, the fission rock formation is relatively strong with an average fissure density of 35 / m, the maximum local fissure density is up to 110 / m, scheelite is enriched in the outer contact zone of biotite diorite body, and the type of fissure filling includes high temperature to low temperature minerals. The enrichment mineralization of scheelite is closely related to electrovaporization and silicification. It is speculated that the enrichment mineralization of scheelite is mainly controlled by the coupling of magmatic hydrothermal mineralization and fissure density associated with biotite diorite. The newly discovered tungsten ore in the mining area has a good prospecting prospect.