关键词: 锰矿, 赋存规律, 控矿因素, 找矿预测, 找矿靶区, 找矿突破

Abstract: Chengkou manganese deposit is a sedimentary deposit.Due to the lack of study on the spatial occurrence of manganese orebodies,the drilling effects is restricted seriously,and a major prospecting breakthrough can not be achieved,since the integrated exploration work is carried out in 2015.In order to solve this problem,through the study of the past analysis results and mineral exploration data of Chengkou manganese deposit,the orebody spatial occurrence regularity of the deposit are analyzed.The study results show that:①the spatial occurrence of manganese orebodies are affected by three factors,including stratigraphy,sedimentary environment and ore-breaking structure after metallogenic period;②the manganese orebodies occur at the top of the second member of the Doushantuo Formation of Lower Sinian,formed in the reductive sedimentary environment from acidic to alkaline transformation;③the platform margin slope and the restricted platform (lagoon) facies are the main facies for the development of manganese orebodies,and the restricted platform (subtidal) facie is a secondary important facie for manganese orebodies;④faults and folds in the mining area are all ore-breaking structures after metallogenic period,and the structural forms is consistent with the distribution of the orebodies in deep area.According to the above study results,three prospecting targets ares are delineated,the No.1 target area is the most important prospecting potential area and the others are the secondary important prospecting potential areas.

Key words: Manganese deposit, Occurrence regularity, Ore-controlling factor, Prospecting prediction, Prospecting target area, Prospecting breakthrough