CHARACTERISTICS AND GENESIS OF THE WEILASITUO ZINC-COPPER POLYMETAL DEPOSIT IN INNER MONGOLIA
GUO Yi-ping1, CHANG Guo-xiong2, LIU Hong-wei3
1. No. 4 Institute of Geologic and Mineral Exploration, Jining 012000, Inner Mongolia, China; 2. Inner Mongolian Geologic Exploration Co. Ltd., Hohhot 010020, China; 3. Inner Mongolia Institute of Mineral Experiment, Hohhot 010020, China
Abstract:The Weilasituo Zn-Cu polymetal deposit in Inner Mongolia, occurred in the Paleoproterozoic Baoyintu formation and the Middle Variscan granodiorite body, is controlled by the E-W-trending compresso-shear fault on the southeast wing of the Mishengmiao anticlinorium. With study on the geology of orefield and orebody, the structure of ore, the mineralogy, wallrock alteration and chemical composition, it is concluded that the metallogenesis of the Zn-Cu polymetal deposit is closely related to the quartz diorite intrusion. The deposit is formed in Middle Variscan, genetically belonging to magmatic hydrothermal type.