甘肃省小西弓金矿床深部和外围找矿潜力研究

Studies on the Prospecting Potentials in Depth and Outside of the Xiaoxigong Gold Deposit,Gansu Province

小西弓金矿床位于塔里木板块北缘柳园-穿山驯前陆上，受NWW向的小西弓-红旗山韧性剪切带控制。矿区由北、中、南三个矿带组成，东西长7000m，南北宽2000m，面积14km^2。以前的勘探工作仅局限在南矿带141～192线间，长1300m，宽500m，面积0．65km^2，共圈出金矿体41个，提交的金储量达中型规模。经过多年的开采，小西弓金矿资源接近枯竭。通过对已有地球物理和化探资料的分析研究，认为在小西弓金矿区深部和外围找矿潜力较大，通过对前人圈定的物化探异常进行进一步查证，有望实现找矿的新突破。

Located in the Liuyuan-Chuanshanxun foreland of the northern margin of the Tarim plate, the Xiaoxigong gold deposit was controlled by the NWW-trending Xiaoxigong-Hongqishan shear zone. It is composed of three mineralized zones, i.e. northern, central, and southern zones, with a length of 7000m and width of 2000 m, and an area of 14 km^2. The previous exploration work was only focused on the Lines141 - 192 of the southern zone, with a length of 1300m and width of 500 m, and an area of 0.65 km^2. Forty-one orebodies were outlined with the gold resources of the middle-scale. After nearly 15-year mining, the gold resource in Xiaoxigong deposit is almost exhausted. According to the studies on the previous geophysical and geochemical data, it is believed that there are great potentials to find the gold mineralization at the depth and outside of the Xiaoxigong deposit. The new breakthrough can be reached by examining the previous outlined geochemical and geophysical anomalies.