内蒙古自治区武川县后卜子铁矿地质特征及成因

后卜子铁矿赋存在太古界色尔腾山群东五分子组中,在多期构造运动和岩浆岩侵入活动的影响下,经历了中-高级区域变质作用,铁质矿物进一步富集形成铁矿,该铁矿在成因上属沉积变质型铁矿床。已经发现的3条铁矿体均赋存于上磁铁石英岩段地层,呈层状产出,矿体赋存在倒转背斜的倒转翼,受构造控制并被区内断裂切断。矿体TFe平均品位均大于30%,mFe平均品位均大于20%。太古界色尔腾山群地层及铁矿石的磁性是本区找矿的重要标志。

Geological characteristics and genesis of Inner Mongolia Houbozi iron deposit in Wuchuan County,Inner Mongolia

Houbozi iron deposit occurs in the East five-molecule formation of the Seertengshan Group of Archean.Under the influence of multi-stage tectonic movement and magmatic intrusion,it has experienced middle-high grade regional metamorphism,and iron minerals have further enriched to form iron ore,the iron deposit belongs to Sedimentary metamorphic type in genesis.Three iron ore bodies are found in the upper magnetite-quartzite strata,which occur in a layered form.The ore bodies are located in the inverted wing of the inverted anticline,which is controlled by structure and cut by faults in the area.The average TFe grade and MFE grade of ore bodies are all over 30%and 20%respectively.The magnetic properties of the Archaean Seertengshan group strata and iron ores are important indicators for ore prospecting in this area.