哀牢山墨江金矿与南乌拉尔山明加克金矿地质特征对比

GEOLOGICAL COMPARISON BETWEEN MOJIANG GOLD DEPOSIT IN AILAOSHAN AND MINDYAK GOLD DEPOSIT IN SOUTHERN URAL

本文通过对产于两个不同造山带中金矿化特征的对比 ,认为墨江金矿与明加克金矿均具有造山带型金矿的一些特征 ,形成于造山晚期主构造带的逆冲走滑阶段 ,产于一级构造带的上盘 ,金矿化受二级和三级剪切张裂隙的控制。与明加克金矿不同的是墨江金矿的形成经历了更长的构造演化历史。

The characteristics of geology and gold mineralization of the Mojiang gold deposit in the Ailaoshan orogenic belt are compared with those of the Mindyak gold deposit in southern Ural orogenic belt. It is pointed out that the Mojiang and Mindyak gold deposits have common geological features, which coincide with that of the typical orogenic belt type gold deposits, i.e., gold mineralization in both deposits formed during the reverse slip stage of main structural zone evolution in the late orogenic phase; gold orebodies occurred in the hanging wall of the main structural zone and were controlled by tensional shearing fracture system of the second and/or the third order structures. The difference between the two deposits is that the formation of the Mojiang gold deposit underwent much longer and more complex structural evolution than that of the Mindyak gold deposit.