云南澜沧老厂银铅锌多金属矿床地质特征、控矿因素与找矿方向

Geological Characteristics,Ore Controlling Factors and Its Propecting Orientation of the Laochang Ag-Pb-Zn Polymetallic Deposit in Lancang,Yunnan

云南澜沧老厂银铅锌多金属矿床是三江成矿带重要的大型银铅锌多金属矿床,是早石炭世火山喷流沉积成矿与喜山期隐伏花岗斑岩侵位成矿的叠加区,具有多因复成和同位成矿的特征。通过对矿区矿床地质特征及控矿因素的研究,分析认为地层、构造、岩浆岩对矿床的形成起到了不同的控制作用。矿区东侧上云山背斜一带,其成矿地质背景、矿床地质特征及成矿地质条件和老厂矿区及其相似,具有较好的找矿空间。

The Laochang Ag-Pb-Zn polymetallic deposit in Yunnan is an important large scale Ag-Pb-Zn polymetallic deposit of Sanjiang metallogenie belt, is early carboniferous volcanic jets sedimentary mineralization and Himalayan superposition of concealed granite porphyry emplacement of metallogenie zone, has more polygenetie and isotopic metallogenie characteristics. Through the research on its geological characteristics and ore controlling factors, it is believed that strata, structure and magmatic rock played different roles in the foemation of the deposit. Shangyunshan anticline belt on the east of Laochang deposit, its ore-forming geological background, ore deposit geological characteristics and metallogenic geological conditions is similar with Lanchang deposit, and has a good prospecting space.