地电化学提取法在金银矿上的应用效果

APPLICATION OF GEOELECTRICAL CHEMICAL EXTRACTION IN GOLD AND SILVER DEPOSITS

地电化学提取法 (简称电提取 )是一种物理化学相结合 ,以离子晕为基础的找矿方法 ,即用人工电场力富集 ,提取自然状态的微量离子晕中的元素信息 ,以达到直接找矿或区分物化探异常源性质为目的新兴找矿特效方法 .我单位在 90年代初引进此方法以来分别在辽宁省阜新排山楼金矿、盖县猫岭金矿、开原市李家银矿、北票二道沟金矿等已知矿床上进行了方法试验研究 ,并取得较好的找矿效果 .在阜新排山楼金矿已知矿体上的方法试验结果对比 ,在已知金矿外围双山地段 ,通过做电提取金矿勘查工作 ,发现电提取金异常带 ,经槽探工程揭露发现平均品位 1.0 5×10 - 6 ,最高品位 2 .4× 10 - 6 的含金矿化体 ,经打钻验证 ,在深部发现工业矿体 ,现今成为中型金矿 .通过对收集的国内外和我单位电提取实地勘查资料的分析研究 ,总结出在典型金、银矿电提取找矿规律 .

Geoelectrical chemical extraction(GCE) is a geophysical geochemical combined exploration method on the basis of ion halo, that is, by extracting the element data in micro ion halo under natural state, with artificial electric field force enrichment, to locate ore directly or distinguish the different features of geophysical and geochemical anomalous sources. The new method has been tested in some given deposit, such as Paishanlou gold deposit, Maoling gold deposit, Lijia silver deposit and Erdaogou gold deposit. The results were effective. In Shuangshan area, outside of the known Paishanlou gold deposit, an anomalous belt is detected by GCE. A gold mineralized body with average grade of 1 05×10 -6 (up to 2 4×10 -6 ) is then revealed by trenching. With an economic ore body drilled in deep, it is now becomes a middle scale gold deposit. After study on the application of GCE both in domestic and abroad, a regularity of ore searching for gold and silver deposits with GCE is summarized.