安徽省庐江县钟山铁矿床地质特征及找矿方向

Geological feature and exploration direction of the Zhongshan iron ore deposit in Lujiang County,Anhui Province

安徽庐江钟山铁矿床位于庐枞火山岩盆地北部,矿体主要赋存于安山岩、安山角砾岩、粗安斑岩(隐爆角砾岩筒)中,矿石类型为赤铁矿石和磁铁矿石,矿床成因类型属于中低—中高温热液交代充填矿床。依据前人研究成果,结合采矿过程中收集的地质资料,总结并论述该矿床的地质特征、成矿控制因素、成矿过程、找矿标志及找矿方向等,这对在庐枞火山岩盆地寻找同类型铁矿,扩大钟山铁矿床的铁矿石资源量具有一定意义,为该矿区深部及外围找矿提供参考。

The Zhongshan iron ore deposit is located in the nor th of the Luzong volcanic basin, wi th ore bodies occurring mainly in andesite, andesitic breccia and cryptoexplosive breccias. Ore types contain hematite ore and magnetite ore. The genesis of the deposit belongs to low-medium and medium-high temperature hydrothermal metasomatism filling deposit. The geological features, orecontrolling factors and ore- forming process, and exploration criteria and direction, etc, were summarized on the basis of the previous research results and geological data collected during mining process. This study is helpful in looking for iron ore deposits of the same type in the Luzong volcanic basin and increasing the resource amount of iron ores in the Dazhongshan iron ore deposit, providing some reference significance in deep and periphery prospecting.