青海省都兰县金水地区锡多金属矿地质特征与找矿标志研究

Research on Geological Characteristics and Ore Searching Criteria of Tin Polymetallic Deposits in Jinshui Area,Dulan County,Qinghai Province

都兰县金水地区位于伯喀里克-香日德成矿亚带东段,成矿地质条件较好。矿体主要位于大理岩与花岗岩内接触带,脆性断裂较发育。控矿因素主要为碳酸盐岩地层+后期酸性岩浆岩控矿,含矿地质体为碳酸盐岩地层与酸性岩浆岩接触所形成的矽卡岩。地层、地表氧化露头、矿化蚀变及矽卡岩等多种找矿标志明显。研究结果为以后的地质勘查提供重要参考。

The Jinshui area of Dulan County is located in the eastern section of the Bocarik Xiangride metallogenic belt,with favorable geological conditions for mineralization.The ore body is mainly located in the contact zone between marble and granite,with well-developed brittle fractures.The main controlling factors for mineral deposits are carbonate rock formations and later acidic magmatic rocks.The ore bearing geological body is the skarn formed by the contact between carbonate rock formations and acidic magmatic rocks.There are obvious prospecting indicators such as stratigraphy,surface oxidation outcrops,mineralization and alteration,and skarn.The research results provide important references for future geological exploration.