关键词: 铜钴矿床, 地质特征, 矿床成因, 找矿标志, 勘查靶区

Abstract: The Luishia copper-cobalt deposit in Congo (DRC) is located in the western extension tec⁃ tonic unit of the Central African copper-cobalt ore belt，with superior metallogenic conditions and good re⁃ source endowment. In order to find out the geological characteristics of the mining area，clarify the metallo⁃ genic mechanism，and explore the potential of deep and peripheral resources，based on the previous re⁃ search results，this paper comprehensively uses geological mapping，high-precision magnetic measure⁃ ment，IP scanning，drilling engineering and rock and mineral testing to carry out systematic exploration re⁃ search. In this survey，30 boreholes are completed with a project spacing of 100 m×50 m. The stratigraphic sequence of the mining area is basically identified as RAT，RSF，RSC，SD，CMN and K，among which SD and CMN are the main ore-bearing strata. The ore body is controlled by folds and NW and NE trending faults. The ore only develops oxidized ore and sulfide ore，and there is no mixed ore. The oxidized ores are divided into in-situ oxidized type and weathering-leaching secondary enrichment type. The deposit has ex⁃ perienced three metallogenic stages，including syndepositional initial enrichment，tectonic metamorphic�hydrothermal superimposed reformation，and supergene oxidation enrichment，and belongs to a typical sedimentary-metamorphic and superimposed stratiform copper deposit. This paper focuses on the engineer⁃ ing verification of the deep part of No.I ore body and the exploration target areas of C and D，realizes thebreakthrough of deep prospecting，basically finds out the output characteristics of 11 ore bodies in the min⁃ ing area，re-approves the resource reserves，effectively expands the resource scale of the mining area， and systematically summarizes the four core prospecting indicators of lithology，structure，mineral and geo⁃ physical and geochemical exploration，and delineates many potential areas of magnetic anomaly. The re⁃ search results can provide geological basis for the subsequent exploration and development of the mining ar⁃ ea，and can also provide reference for the exploration of similar copper-cobalt deposits.

Key words: copper-cobalt deposits, geological characteristics, deposit genesist, prospecting indica? tors, exploration target