格鲁其堆山铅锌矿床地质特征及地球物理找矿标志

Geological Characteristics and Geophysical Prospecting Signs of Geluqiduishan Pb-Zn Deposit

格鲁其堆山铅锌矿床是近年来新发现的具有较大找矿潜力的铅锌矿床,矿化体赋存于额尔古纳河组和佳疙瘩组地层中,矿体产出受北东-北东东向断裂构造控制,与硅化、方铅矿化、闪锌矿化、黄铁矿化、萤石化、重晶石化关系密切。从电性参数上看,研究区内找寻目标体主要以低阻高极化率为标志,电阻率介于18~640Ω·m,浸染状矿石电阻率相对较高;极化率介于5.02%~5.03%之间。通过1：2万激电中梯测量工作,矿带附近激电特征明显,视电阻率范围介于110~600Ω·m之间;视极化率范围介于1.0%~3.8%,总体表现为低电阻率中高极化率异常。

Geluqiduishan Pb-Zn deposit is a recently discovered deposit in recent years with large prospecting potential. The ore bodies are hosted within stratum of Ergun group and Jiageda group, and Pb-Zn mineralization is closely related to silicification, galena, sphalerite , pyrite, fluorite, barite, and strictly controlled by the NE and NEE trending faults .The elec- trical parameters show that searching target is low resistivity and high polarization market with resistivity range of 18Ω·m to 640Ω·m, with relatively resistivity for high disseminated deposit, and chargeability of anomaly ranges from1.0% to 3. 8%. Based on the analysis of IP anomaly, apparent resistivity is from 110Ω·m to 600 Ω·m and apparent chargeability of anomaly ranges from1.0% to 3.8% ,characterizing low resistivity and medium-high polarization for IP anomaly.