Geological Characteristics And Genetic Analysis of Developed Lead-zinc Deposits in Yiliang County
Yiliang County developed lead-zinc ore is located in the Yunnan,Sichuan and Qian lead-zinc(silver)me-tallogenic belt.Five lead-zinc ore bodies are found in the mine.The ore bodies mainly occur in NW and NE trending faults.The ore-bearing strata are thick layer-massive dolomite of Middle Ordovician Daqing Formation.According to the ore-mineral association relationship,the metallogenic process of the lead-zinc deposit can be divided into three stages.The contents of trace elements in LA-ICP-MS in situ indicate that the genesis of the deposit is related to mag-matic or volcanic activities,while the relative enrichment of Cd and Tl elements indicates that the Ⅲ stage of the for-mation of the lead-zinc deposit may be the main metallogenic stage of the developed lead-zinc deposit.The genesis of the deposit belongs to the medium and low temperature hydrothermal metasomatic lead-zinc deposit controlled by structure+lithofacies.
developed lead-zinc oretrace elementsLA-ICP-MSgenesis of deposit
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