云南澜沧老厂银铅锌铜矿床地质特征、控矿要素及找矿靶区

澜沧老厂银铅锌铜矿床有明显的垂直分带,具＂五楼一梯＂的矿化结构。它是典型的多因复成矿床,主要成矿作用包括早石炭世火山喷流沉积作用及喜山早期隐伏花岗斑岩热液成矿作用。主要控矿要素包括火山机构、火山旋回、火山岩浆分异演化程度、隐伏花岗斑岩。通过对矿床地质特征及控矿因素的详细研究,提出了找矿靶区。

Geological characteristics, ore-controlling factors of the Laochang Ag-Pb-Zn-Cu depositin Lancang,Yunnan and its prospecting targets

There is obvious vertical zonation in the Laochang Ag-Pb-Zn-Cu deposit with mineralization model of five-storied plus one-ladder. It is a typical polygenetic compound deposit. The mineralization includes volcanic exhalation sedimentation in Early Carboniferous and the hydrothermal process related to concealed granite porphyry in Early Himalayan period. The main ore-controlling factors are volcanic mechanism, volcanic cycle, volcano and magma differentiation degree, and concealed granite porphyry. On the basis of detail study of geological feature and ore-controlling factors of the deposit, the paper has pointed out the prospecting targets.