Abstract:The Laochang deposit in Lancang, Yunnan Province, is one of the most important Pb-Zn-Cu-Mo polymetallic deposits in the southern Sanjiang metallogenic belt. According to different ore-bearing characteristics, lithology, ore structures and metallogenic elements, the ore types of the study area are systematically divided into Pb-Zn sulfide ore, Pb-Zn oxidized ore, granular Cu-bearing pyrite ore, massive Cu-bearing pyrite ore, skarn-type ore and porphyry molybdenum ore. The orebody occurrence, trace element geochemistry and chronology all show that the Pb-Zn sulfide ore, granular Cu-bearing pyrite ore and massive Cu-bearing pyrite ore are of volcanic exhalation sedimentary origin (VMS type), while the Pb-Zn oxide ore, skarn-type ore and porphyry molybdenum ore are of porphyry hydrothermal origin. The main ore-controlling factor of VMS type is strata, that of Pb-Zn oxide ore is structure, that of skarn-type ore is lithology and that of porphyry molybdenum ore is rock mass.
王磊, 李高权, 李洪江, 陈品鸿, 蔡昌厚, 杨大省. 云南澜沧老厂多金属矿床矿石类型及其成因探讨[J]. 地质与资源, 2019, 28(6): 535-542.
WANG Lei, LI Gao-quan, LI Hong-jiang, CHEN Pin-hong, CAI Chang-hou, YANG Da-sheng. DISCUSSION ON THE ORE TYPES AND GENESIS OF LAOCHANG POLYMETALLIC DEPOSIT IN LANCANG AREA, YUNNAN PROVINCE. GEOLOGY AND RESOURCES, 2019, 28(6): 535-542.
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