一、前言大红山矿区的铁矿,主要产于大红山群红山组变钠质火山岩及绿色片岩中;而铜矿,主要产于曼岗河组绿色片岩夹不纯大理岩中。由于矿床历经多次构造运动、岩浆活动及变质蚀变作用,加之含矿(铁)岩系出露不全,因此对其成因,一直存在着不同的认识。随着工作程度的深入,原来持浅成、超浅成侵 I. INTRODUCTION The iron ore in the Dahongshan Mining Area is mainly produced in the Hongshan Group of the Red Mountains, which changes into the sodium volcanic rocks and the green schist. The copper ore is mainly produced in the impure marble of the green schist in the Manganghe Formation. Due to the many tectonic movements, magmatic activity and metamorphic alteration of ore deposits, together with the incomplete exposure of ore-bearing (iron) rock series, different understandings have always existed on the causes of these deposits. With the depth of work, the original hold shallow, super-shallow invasion