Practice shows that the application of frequency spectrum characteristics to the evaluation of IP anomalies caused by sulfide mineralized bodies (chalcopyrite) and graphite-bearing dolomitic marble is effective.

• 实践证明，利用频率谱定性评价硫化物矿化体（黄铜矿）与含石墨白云质大理岩激电异常源取得较佳效果。