云南东川滥泥坪铁铜矿区不同矿石类型的密度和磁化率特征

Ore types and characteristics of Lanniping iron and copper deposit in Dongchuan mining area, Yunnan

云南东川滥泥坪铁铜矿区铁氧化物铜金型(IOCG)矿体中矿石可分为铁矿石、铁铜矿石和铜矿石3种工业类型。根据矿物类型、结构构造、共伴生组分、磁化率和密度等特征,将矿石分为高磁高密度型、低磁高密度型、中磁中密度型和低磁中密度型等4种矿石。磁铁矿矿石、含铜磁铁矿矿石、钛铁矿矿石的磁化率和密度呈正相关关系;黄铜矿矿石、斑铜矿矿石的磁化率和密度相关性不明显。矿石的磁化率和密度特征可作为本区因民组三段中的铁氧化物铜金型(IOCG)矿体的直接找矿标志,可有效提高找矿效率。

The iron oxide copper-gold type(IOCG)orebody can be divided into three industrial types,iron ore,iron-copper ore and copper ore in Lanniping iron-copper deposit,Dongchuan mining area,Yunnan Province.According to the mineral type,structure and structure,structure,associated components,susceptibility and density,the ore can be divided into four types,the type-ore with high susceptibillity and high density,the type ore with low susceptibillity and high density,the type ore with medium susceptibillity and medium density and the type ore with low susceptibillity and medium density.The magnetic susceptibility and density of magnetite ore,copper bearing magnetite ore and ilmenite ore are positively correlated,but the magnetic susceptibility and density of chalcopyrite ore and bornite ore are not significantly correlated.The characteristics of magnetic susceptibility and density of ore can be used as the direct prospecting mark of iron oxide copper gold type(IOCG)orebody in the third member of Yinmin Formation in this area,which can effectively improve the prospecting efficiency.