钟姑矿田铁矿成矿模式与规律及找矿标志

Iron Ore Formation Mode and Law and Prospecting Indicators of Zhonggu Ore Field

钟姑矿田是宁芜地区重要的矿集区之一,在前人工作与研究的基础上,通过对矿田成矿地质背景和各类矿床地质特征的分析,总结出本矿田"三楼三型五式"和"格状-通道-成群-配套-三层楼"的成矿规律,富碱富铁、高氧化度和低镁质岩浆岩,三叠系含钙质页岩、灰岩和含膏盐地层及重磁异常组合是其找矿标志。对目前开展的新一轮铁矿勘查工作具有一定的借鉴和指导意义。

Zhonggu ore field is one of important ore concentration areas in Nanjing-Wuhu region. Based on the previous work and research,through the analysis of the geological background of ore formation and geological characteristics of various types of deposits, the paper summarizes the ore formation laws such as ＂three floor three types in five modes＂ and fenster -channel -grouping -complementation -three-storied building＂, and the ore prospecting indicators including rich alkaline rich iron,high oxidation and low magnesium magmatic rock, calcium-containing shale,limestone of Trias and gypsolyte stratum and gravity- magnetic abnormal combination, which are of certain reference and guidance significance to the new round of iron ore exploration.