十五里桥金矿是近年来在上黑龙江盆地南缘发现的一小型岩金矿床。矿床赋矿岩石主要为硅化角砾岩，围岩为安山岩或蚀变安山岩。区内岩石物性测定结果显示，硅化角砾岩（矿石）与围岩（安山岩）的视电阻率差别较大，而与区内脉岩（闪长岩）较为接近，硅化角砾岩的视极化率略大于安山岩而小于地表氧化的青磐岩化安山岩，因此认为该区物探工作采取的电性参数应以视电阻率为主，主要寻找的目标体应呈现高阻、高极化特征。通过对区内高磁ΔT、视电阻率与视极化率等特征及异常进行分析，结合区内地质情况可以推测矿区存在多条NNE向隐伏断裂带，以高磁为主要标志，并呈低阻、中低极化特征；在NNE向高磁异常带东西两侧发育的次级NE-NEE向断裂为本区主要的容矿构造，NE与NNE向断裂交会部位金矿化显示较好，为下一步找矿提供了依据。

The Shiwuliqiao gold deposit，a small rock gold deposit in recent years，was found in the southern margin of the Heilongjiang Basin.The ore-bearing rocks of the deposit are the main silicified breccias and the wall rocks are andesites or alternation andesites.Through measurement regarding the regional petrophysical characteristics，the results show that the apparent resistivity of silicified breccias （ore） is quite different from wall rocks（andesite），but its closer to the dikes（diorite）.Secondly，the apparent polarization of silicified breccias is slightly greater than that of the wall rocks，and less than that of the propylitization andesite with surface oxidation.Thus the proposal of the geophysical work in the area will mainly focus on electrical parameters and aim at the targets with the characteristics of high resistances and polarizations.By analyzing the area of high magnetic ΔT，resistivity，polarizability characteristics and abnormalities combined with geological conditions in the region，it’s speculated that there were more than one NNE trending concealed fault belt existing in the deposit with high magnetic as a main indicator and a low resistance，low polarization as characteristics.In the both east and west sides of NNE high magnetic abnormal belts，the development of the secondary NE-NEE trends fault structure provided the main structure with ore containing in this region.The intersection area between the NE and NNE faults exist better gold mineralization.It will provide the basis for next step prospecting.