东秦岭小河—公馆多金属成矿带中金矿成矿预测

Metallogenic Prediction of Gold Deposit of Xiaohe-Gongguan Polymetallic Ore Belt,East Qinling

镇安—旬阳盆地边缘分布着铅锌—金—汞锑矿床,分析认为铅锌—金—汞锑矿为一个成矿系列。通过对小河—西沟地区的1∶5万水系沉积物异常进行综合评价,圈定等值线图,结合遥感、已知矿脉的展布特征及控矿因素,分析认为小河金矿东部的十二条岭一带是成矿的有利部位,经工程揭露,新发现了3条破碎带,1条金矿化体。通过分析区域构造形迹特征,预测矿区东部的西沟一带具有较好的成矿条件,经查证,新发现2条矿化体。借鉴小河—西沟地区成功的找矿方法,重新对小河—公馆地区的水系沉积物测量进行综合评价,新圈定A类预测区3个,B类预测区5个。

The margin of Zhenan-Xunyang basin distribute zinc-gold-antimony deposits,through analysis,we think that the lead-zinc-gold-mercury and antimony deposit is a metallogenic series.By comprehensive evaluation for 1：5 million stream sediment anomaly of Xiaohe-Xigou area,we delineat contours,combined with remote sensing,distribution characteristics of veins and ore-controlling factors,we think that the east of Xiaohe gold deposit is favorable position,though project expose,we find three broken belt,one gold body.By analyzing the characteristics of the regional structural features,we predict that the east of mining area has good mineralization,and find two mineralization bodies.Draw the successful prospecting methods of Xiaohe-Xigou area,we comprehensive evaluation of the stream sediment survey,and delineat three A-type prediction area,five B-type prediction district.