河北省平泉县小寺沟铜钼矿床航磁异常特征及深部与外围找矿前景初步分析

The Preliminary Analysis of the Aeromagnetic Anomalies of Copper Molybdenum Deposit and the Deep Part and Periphery Prospecting Potential of the Xiaosigou in Pingquan County of Hebei Province

系统地研究了河北省平泉县小寺沟铜钼矿床的航磁异常特征,新发现两条可能由隐伏中酸性岩体引起的磁异常带,推断在小寺沟含矿岩体南部存在较大的隐伏岩体;另外,在小寺沟铜钼矿床外围,依据1∶25000高精度航空磁测圈定了大量燕山期中酸性岩体,并对矿床外围及深部的找矿前景进行了初步分析,认为在已知矿床外围寻找斑岩型或热液型矿床具有较好的找矿前景;该研究对解决危机矿山问题具有重要意义。

This paper studies the aeromagnetic anomalies of copper molybdenum deposit of the Xiaosigou in Pingquan County of Hebei province. The two newly discovered magnetic anomaly zone which may be caused by the hidden acidic rock bodies can infer that there are large hidden rocks in the southern of the ore bearing rock of Xiaosigou. In addition, mass intermediate acidic rock in Yanshan period on the basis of high precision aeromagnetic sur- vey with the ratio of 1..25000 is delineated in the periphery of the copper molybdenum de- posit, and also the periphery of the deposit and deep prospecting are analyzed preliminarily.The conclusion is that there is good prospecting potential of exploring porphyry and hydro thermal deposit around the known ore deposit. This study has important significance in sol ving the problem of mines crisis.