陈家山褐铁矿矿床地质特征及矿床成因

陈家山矿床位于鲁西沂源县境内,为小型褐铁矿矿床,矿区内矿体有似层状和脉状两种产状;矿体规模较小,厚度、品位变化较大;褐铁矿矿石自然类型以致密块状、蜂窝状、粉粒状几种矿石较普遍。断裂构造和围岩对成矿、控矿具有重要的作用,似层状矿体以交代作用为主,脉状矿体以充填作用为主。矿床成因属中低温热液交代充填—风化淋滤型矿床;沿主断裂带走向及深部均有较好的找矿前景。

Geological Characteristics and Its Origin of Chenjiashan Limonite Deposit in Western Shandong

Chenjiashan limonite deposit is a small mineral deposit in western Shandong.The form of ore body is consisting of bedded vein and vein.The mass of ore is a small size ore body which is variety in thickness and grade.The main natural type of limonite ore include massive,honeycomb and pulverulent.The faulted structure and wall rock are important in mineralization and ore-control factor.Metasomatism is in the highest fligh in the bedded vein,but infilling mineralization is in the highest fligh in the vein.The deposit is a middle-low hydrothermal type deposits related to metasomatic filling-weathering and leaching processes.The strike and deep of the main faulted structure have preferable prospect of limonite exploration.