关键词: 铜钴矿, 地质特征, 成矿阶段, 找矿标志

Abstract: The Lujiba copper-cobalt deposit is located in the Katanga copper-cobalt mineralization belt within the Congolese（DRC）- Zambia mineralization domain. This area has undergone multiple stages of tectonic-overlying movements，forming a complex tectonic pattern and accompanied by the occurrence of a large number of layered and quasi-layered deposits. The deposit is mainly located in the Luo′an Group clastic rock-carbonate formation in the lower part of the Katanga Supergroup and has significant layer-con⁃ trolled characteristics. To clarify the metallogenic regularity and stages of the deposit，through a detailed analysis of the regional metallogenic characteristics and geological features of the deposit，the mineral char⁃ acteristics of the ore and the prospecting indicators were systematically determined. The results show that the ore (mineralized) mainly occurs in the R2 siliceous dolomite and sandy dolomite of the Luo ′an Group mining group，and is produced in layered and quasi-layered forms. The mining area structure inherits the regional structural characteristics. The folding structure and the concurrent strike faults control the spatial distribution of the ore-bearing strata. The secondary structures formed later provide migration channels and ore-bearing space for the ore-bearing hydrothermal fluid. The ore - (mineralized) strata are strictly con⁃ trolled by the strata and structure. The main ore minerals in the deposit are malachite and chalcocite，with a small amount of natural copper，porphyrite，chalcocite，etc. The mineralization period of the deposit can be divided into four stages of the initial mineralization period，the main mineralization period，the hydro⁃ thermal modification period and the surface enrichment period. The Lujiba copper-cobalt deposit is a lay⁃ er-controlled deposit that has undergone multiple tectonic，hydrothermal superposition and metamorphic modifications. The lithology，structure，typical minerals and other characteristic features of the strata are all exploration indicators for similar deposits.

Key words: copper-cobalt deposit, geological characteristics, metallogenic stage, prospecting mark? ers