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奇波格莫矿区是一重要黄金产区,迄今为止生产了1050吨黄金,平均品位1.85克/吨。与用变化组分划分脉型矿床的一般趋势相比,本文论述了在金矿化类型地区中,区域岩性和构造演化的重要影响。同火山期矿化包括火山成因块状硫化物和浸染状矿化,以及后期的低温热液矿化,后者也与演变的火山地形和同火山侵入体有关。典型太古代脉金矿床和后期不明成因的Cu-Au矿床的侵位与同变形时期(基诺拉)一致。东西向剪切带和北东向断层系之间的空间关系说明了金矿化期间形成附加扩容现象的可能机制。基诺拉晚期至后期的剪切系控制了层状侵入体内金矿化晚期主要阶段的侵位。
The Chigobogo Mine is an important gold producing area, producing 1050 tons of gold so far, with an average grade of 1.85 g / t. In contrast to the general trend of delineating vein-type deposits with variable components, this paper discusses the important implications of regional lithology and tectonic evolution in gold-mineralized areas. Volcanic mineralization includes volcanic massive sulphide and disseminated mineralization, as well as late cryogenic hydrothermal mineralization, which is also associated with evolving volcanic terrain and volcanic intrusions. The emplacement of the typical Archean vein gold deposit and later unknown Cu-Au deposit coincides with the same deformation period (Kenora). The spatial relationship between the east-west shear zone and the NE-trending fault system illustrates a possible mechanism for the formation of additional dilatancy during gold mineralization. The late-to-late cleavage line of kenola controls the emplacement in the main stages of late gold mineralization in the laminar invasion.