豫西花山花岗岩北东侧金矿成矿特征

MINERALIZATION FEATURE OF GOLD MINE TO THE NORTHEAST OF HUASHAN GRANITE MASS IN THE WEST OF HENAN

依据地质、地球物理、矿体特征 ,对花山花岗岩北东侧金矿成矿进行了剖析 ,认为成矿物质来源于太古代闪长岩与太古代片麻岩和燕山期花岗岩 ,成矿在半封闭和开放两类构造条件下进行。封闭构造很少有燕山期花岗岩成矿物质的加入 ,但可形成较富的小矿体 ,开放构造有大量的燕山期花岗岩成矿物质的加入 ,可形成规模较大、品位稍低的金矿体。成矿过程表现出持续性。

The gold deposits to the northeast of Huashan granite mass in the west is hosted in Taihua group, it is controlled by northeast striking fault in space. According to features of geology and geophysics and ore bodys,mineralization regularity has been analyzed. It's considered that the ore forming material from diorite in Ar stage and gneiss in Ar stage and granite in Yanshan stage, and mineralization is controlled by both half closing structures and opening one. Little ore forming matter in Yanshan stage granite had mixed in half closing structure, but small rich orebody could be formed. A lot of ore forming matter in Yanshan stage granite had mixed in opening structure, bigger, but lower grade gold body could be formed. Mineralization process showed continuity and many phases and inheritance.