摘要
鹤庆北衙金多金属矿床位于德格—中甸陆块、巴颜喀拉—扬子陆块与昌都—思茅陆块三个Ⅰ级构造单元结合部东侧。成矿作用主要受北衙组灰岩、喜山期富碱斑岩、次级构造控制,由岩浆高、中、低温热液交代、蚀变、充填形成金矿床。岩体的接触带、蚀变斑岩体内的构造破碎带、围岩内的层间滑脱带和陡倾斜断裂是重要的赋矿场所。
Beiya gold polymetallic ore deposit in Heqing county of Yunnan is located at east side of the joining part of threeⅠclass tectonic units,namely Dege-Zhongdian landmass,Bayankela-Yangtze landmass and Changdu-Simao landmass.The mineralization is mainly controlled by Beiya group limestone,alcali-rich porphyry of Himalayan period and second-grade tectonics,and gold deposits was formed through replacement,alteration and filling of high to mesothermal and epithermal fluid.The contact zone with magmata body,crush belts in altered porphyry and interlayer detachment zones and steep fractures are important ore bearing places.
出处
《矿产与地质》
2010年第3期198-203,共6页
Mineral Resources and Geology
关键词
金多金属矿床
成矿地质条件
控矿条件
鹤庆北衙
云南
gold polymetallic deposit
geological ore-forming condition
ore-controlling condition
Beiya
Heqing county
Yunnnan province
