摘要
果木园子铁矿位于歪头山—北台铁矿成矿带北部,果木园子铁矿为隐伏矿。根据磁场分布特征,将本区矿带分为北部铁矿带、中部铁矿带、南部铁矿带。Fe3、Fe7、Fe9为区内主矿体,区内矿体总体走向北北西-北北东,倾向西,倾角一般为30°~70°。矿体呈层状及透镜状,沿走向及倾向均有舒缓波状弯曲现象,厚度也有随褶曲呈厚薄变化特点,褶皱转折端矿体往往变厚。本区铁矿产于鞍本地区中太古代含角闪石类硅铁建造中,赋矿岩层为太古界鞍山群茨沟岩组变质岩系,经历了中晚太古代的区域变质作用。属于沉积变质改造型矿床,即"鞍山式铁矿"。
Guomuyuanzi iron deposit is located in the north of Waitoushan Beitai Iron ore belt,and guomuyuanzi iron deposit is a concealed deposit.According to the distribution characteristics of magnetic field,the ore belt is divided into northern iron ore belt,central iron ore belt and southern iron ore belt.Fe3,fe7 and Fe9 are the main ore bodies in the area.The ore bodies in the area generally strike nnw-nne,dip to the west,and the dip angle is generally 30°to 70°.The orebodies are layered and lenticular,with gentle wavy bending along the strike and dip.The thickness also varies with the thickness of folds.The orebodies at the turning ends of folds tend to become thicker.The iron ore in this area occurs in the middle Archean amphibole bearing siliceous iron formation in AnBen area.The ore bearing strata are metamorphic rock series of Cigou formation of Archaean Anshan Group,which experienced regional metamorphism of middle and late Archean.It belongs to sedimentary metamorphic alteration type deposit,namely"Anshan type iron ore deposit".
作者
张伟
ZHANG Wei(Liaoning Metallurgical Geological Exploration Research Institute Co.,Ltd,Anshan 114038,China)
出处
《世界有色金属》
2020年第14期108-109,共2页
World Nonferrous Metals
关键词
果木园子
矿体特征
鞍山式铁矿
guomuyuanzi
ore body characteristics
Anshan type iron ore deposit
