黎平古邦金矿区控矿因素及找矿方向

摘要

通过对古邦金矿区控矿因素即地层、构造及岩相古地理研究,认为区内南华系长安组含金较高,为金成矿提供一定的物源;矿区金矿化类型为构造蚀变岩型、石英薄脉型金矿;区内南华系长安组为一套冰期—间冰期沉积,其地层岩性对区内金成矿具专属性;该区劈理密集带内发育有断裂构造的（构造蚀变带）明显地控制了金矿化体的展布;呈密集的陡倾斜压剪性节理带控制着区内石英薄脉型金矿的产出;构造蚀变带和节理密集带对金成矿关系密切,直接控制着该类型金矿体的定位。%By study the ore factor,stratum,structure and lithofacies palaeogeography of Gubang gold mining area,it＇s thought that Changan formation of Nanhua system which gold content is high,affords some material source for gold mineralization.The gold mineralization is tectonic altered rock and quartz vein type gold deposit.Changan formation of Nanhua system in this area is a series of interglacial deposit during ice age.The stratum lithology is exclusive for the gold mineralization in this area,the tectonic altered belt of fracture structure which developed in the cleavage concentrated zone controls the distribution of gold mineralization zone.The concentrated steep baroclinic shear joint controls the occurrence of quartz vein fold deposit.The tectonic altered zone and joint contrated zone has deep relation of gold mineralization,controls the positioning of this kind of gold ore body.