鄂东北地区锰(磷)矿床地质特征及找矿潜力分析

Geological characteristics and prospecting potential analysis of the manganese(phosphorite) deposit in northeast Hubei Province

鄂东北地区红安岩群地层里广泛发育锰(磷)矿床(如鹰咀山、四方山-团山沟和孙冲等),矿体主要受NW向断裂控制,具成群成带密集分布特征,它们是同一时期不同位置成矿所致。本文系统阐述了矿床的地质特征,总结了该区锰(磷)矿床的成矿规律及控矿因素,并提出找矿标志,为扬子板块周缘此类矿床的勘查找矿提供理论参考;认为四方山矿段北侧何家湾一带及孙冲三房湾矿段西南侧是锰(磷)矿找矿有利地区。

Manganese(phosphorite) deposits(such as the Yingzuishan,Sifangshan-Tuanshangou and Sunchong) are widely developed within the Hong’an Group in northeast Hubei Province.Ore bodies are all controlled by NW trending faults and densely distributed in groups and zones,forming manganese(phosphorite)deposits in different places in the same period.The paper systematically describes the geological characteristics of these deposits,summarizes ore-forming regularity and ore-controlling factors of the manganese(phosphorite)deposits in this area,and puts forward the prospecting indicator,which provides theoretical reference for the exploration and prospecting of such deposits on the periphery of the Yangtze plate.The area of Hejiawan in the north of Sifangshan and the area of Sanfangwan in the southwest of Sunchong ore section are favorable areas for manganese(phosphorite) ore prospecting.