云南元江县龙潭金矿地质特征及成因浅析

THE GEOLOGICAL FEATURE AND A PRELIMINARY GENESIS ANALYSIS OF LONGTAN AU DEPOSIT IN YUANJIANG,YUNNAN

云南元江县龙潭金矿矿体呈脉状赋存于断层构造破碎带中,构造控矿明显。矿体围岩主要为不同期次的花岗斑岩、花岗岩和中元古界昆阳群黑山头组(Pt2hs)板岩、砂质板岩。矿化蚀变主要有硅化、黄铁矿化、褐铁矿化、铅锌矿化等。矿体的形成具有多因素、多期次的成矿特点。矿床成因类型属中低温热液充填矿床。

The orebody of Longtan Au deposit in Yuanjiang,Yunnan is veined in the fault fracture zone controlled by the structure clear.The main wall rocks of orebody are various period of granite porphyry,granite and Middle Proterozoic Kunyang Group Heishantou Formation(Pt 2 hs)slate,sandy slate.The main metallogenesis alterations are silicification,Pyritization,Limonitization,Pb-Zn metallogenesis,etc.The orebody forming is characterized by the multifator,multiperiod,belonging to the medium-low T hydrothermal filling deposit.