摘要
Abstract
The mining area is located at the intersection of Wenma fault zone and Majuan fault zone in the west part of southeast Yunnan fold belt of South China fold system.Antimony polymetallic deposits occur in the siliceous strata of the lower part of the Middle Cambrian Tianpeng Formation,and the fold structure controls the enrichment degree of antimony mineralization.The hydrothermal siliceous rocks were deposited in the middle Cambrian and provided abundant ore-forming materials for mineralization.In the late Caledonian period,regional deformation and metamorphism promoted the activation of Sb and SiO2 in the original ore layer,and migrated to the expansion zone-anticlinal core for enrichment and mineralization.In other words,the deposit has experienced two mineralization periods of hydrothermal deposit and metamorphic hydrothermal transformation in Caledonian area.The genetic type of the deposit is the hydrothermal sedimentary antimony polymetallic deposit transformed by metamorphic hydrothermal transformation.关键词
华南褶皱系/滇东凹陷/锑多金属矿/矿床成因Key words
South China fold system/East Dian Depression/Antimony polymetallic ore/Genesis of deposit分类
天文与地球科学
