南秦岭东段早寒武世黑色岩系金钒成矿特征与找矿方向——以夏家店矿床为例

Metallogenic Characteristics and Prospecting Target of Au-V Deposits in Early Cambrian Black Rock Series in the Eastern South Qinling:A Case Study of the Xiajiadian Deposit

南秦岭东段广泛分布着寒武系黑色岩系,中村钒矿、银花钒矿、千家坪钒矿等大中型矿床产于其中。夏家店金钒矿床的发现与勘查,揭示钒矿具有鲜明的层控和岩控特征,矿体产在下寒武系水沟口组底部,沉积成矿与寒武系的缺氧事件有关,而金的成矿过程不但受其制约,重要的是受到造山后期构造的叠加形成。在勘查过程中注重综合找矿,北东向的断裂构造与黑色岩系的叠加部位,是找金的有利部位。

The black rock series is developed in eastern South Qinling, which contains large scale Au and V deposits, such as the Zhongcui, the Yinhua and the Qianjiaping vanadium deposits. With the finding of the Xiajiadian gold （vanadium） deposit in the series, it is now clear that the vanadium deposit is obviously controlled by strata and lithology and was formed in the lower part of the early Cambrian Shuigoukou formation. The formation of the deposit is related to the anoxic setting. However, the formation of the gold deposit is not only controlled by the black rock series, but is also controlled by structure activities after organic processes. Therefore, it is crucial to carry out combination approach in the exploration, particularly in the area where the east and north striking structures were in superposition in the black rock series.