甘肃寺沟门金矿地球化学特征及找矿方向

Geochemical Characteristics and Prospecting Direction of Sigoumen Gold Deposit,Gansu Province

甘肃寺沟门金矿位于祁连-北秦岭加里东造山带接合部位的关子镇-李子园新元古-早古生代裂陷火山-沉积带中的东部,处于连接祁连与北秦岭造山带巨大的反"S"型构造带构造线由近南北向转入近东西向的地段。赋矿层位主要为震旦-奥陶系李子园群木其滩组绿片-低角闪片岩相的中浅变质地层,受关子镇-元家坪韧性剪切带派生的一系列次级断裂控制,与各种岩脉关系密切。笔者在总体成矿地质特征、地球化学特征的基础上提出了找矿标志和方向。

s： Sigoumen gold deposit of Gansu is located in the Liziyuan guanzizhen Neoproterozoic Early Paleozoic volcano sedimentary rift zone in the east with in the Qilian and North Qinling Mountains orogenic beltjoint part . In the Qilian and North Qinling Mountains orogenic belt, the tectonic line of the great ＂S＂ - type structural belt is transferred from the south to the west.The ore bearing strata is mainly metamorphic strata in Sinian Ordovician Liziyuan group the wood Beach - low greenschist group hornblende schist, the guanzizhen Yuan Jia Ping ductile shear zone in a series of secondary faults control, closely related with a variety of dikes. Based on the general geological and geochemical characteristics of the ore deposits, the author puts forward the prospecting criteria and direction.