摘要
红旗岭脉状锡多金属矿床产于震旦系变质砂岩夹板岩中,矿体受北北东—北东向断层裂隙的控制,与燕山期岩浆岩体关系密切,属岩浆期后中—高温热液裂隙充填矿床。矿化强度与硅化、绿泥石化、铅锌黄铁矿化显示了正的消长关系。成矿活动贯穿了燕山期的四个阶段,是多期次、多阶段成矿作用的产物。
The Hongqiling vein-type tin-polymetallic deposit occurs in the Sinian metamorphic sandstone intercalated with slate. Its orebodies are controlled by NNE-NE trend faults and fractures. There are four types of ore in the district, cassiteritequartz type, cassiterite-sulphide type, cassiterite-chlorite-quartz type and cassiterite-galena-sphalerite-pyrrhotite type. The intensity of mineralization shows positive relation with silicification, chloritization and lead-zinc-pyrrhotitization. Average tin content of the orebodies is 0.395％. Tin exists mainly in the form of cassiterite, which covers 90.29-96.66％ of the total tin content. Associated useful components are Pb, Zn, Cu and W etc. The study of the element distribution and stable isotope (O, S, Pb)composition of various geologic bodies in the district indicates that the formation of the deposit is closely connected with the intrusion of Qianlishan Granites and the ore-forming fluid came from the granitic magma. The ore-forming process can be divided into four stages of mineralization corresponding to the four phases of magmatic activity in Yanshanian Period. It is the product of polyphases and polystageous mineralization.
出处
《湖南地质》
1990年第1期43-51,共9页
Hunan Geology
关键词
锡
多金属矿
成矿
地球化学
Tin
Polymetallie ore
Geology of ore deposit
Geochemistry
