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黑龙江省黑河市八分场银多金属矿床地质特征及找矿标志
- 作者：
- 乌日根|李新鹏|庄倩|刘洪大|石国明
- 作者单位：
- 黑龙江省自然资源调查院|黑龙江省自然资源调查院|黑龙江省自然资源调查院|黑龙江省自然资源调查院|黑龙江省自然资源调查院
基金项目：
- 黑龙江省省级矿产资源专项基金（SDKC〔2017〕035，SDK〔2019〕002）
详细信息：
- 作者简介：
- 乌日根（1984—），男，蒙古族，内蒙古呼和浩特人，高级工程师，从事矿产勘查工作；哈尔滨市香坊区新乡里街9号，黑龙江省自然资源调查院，150036；E-mail:264950191@qq.com
- 通讯作者：
- isnull
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Geological characteristics and prospecting indicators in Bafenchang silver polymetallic deposit,Heihe City,Heilongjiang Province
- English Author：
- Natural Resources Survey of Heilongjiang Province|Natural Resources Survey of Heilongjiang Province|Natural Resources Survey of Heilongjiang Province|Natural Resources Survey of Heilongjiang Province|Natural Resources Survey of Heilongjiang Province
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
八分场银多金属矿床矿体主要赋存在腰桑南组地层中，赋矿围岩主要为变质砂岩、砂质板岩及构造角砾岩。矿区内共圈定工业银矿体30条，其中深部隐伏矿体20条，均呈脉状赋存于北北东向构造破碎带中。矿体位于北东向和北西向断裂交汇部位，在矿体中见有大量石英脉及少量闪长岩脉侵入，表明成矿可能经历了多期次热液活动。以矿体为中心，蚀变可划分为3个条带：强黄铁绢英岩化带→弱硅化碳酸盐化带→青盘岩化带。腰桑南组地层、北北东向断裂、强硅化等是重要的地质找矿标志；正磁异常、中低电阻率、高极化率是重要的地球物理找矿标志；Ag、Pb、Zn元素土壤异常是重要的地球化学找矿标志。
关键词:
蚀变带；地质特征；腰桑南组；找矿标志；八分场银多金属矿床
Abstract:
The ore bodies in Bafenchang silver polymetallic deposit mainly occur in the strata of Yaosangnan Formation,and their ore-hosting surrounding rocks are mainly metamorphic sandstone,sand slate,structural breccia.In the mining district,30 industrial silver ore bodies are delineated,and 20 of them are deep concealed ore bodies,all taking the form of veins and occurring in the NNE trending structural fractured zone.The ore bodies are located at the intersection of NE and NW trending fractures.In the ore bodies,plenty of quartz veins and small amount of diorite veins intrude,indicating that the mineralization may have been through multiphase hydrothermal activities.Centered from the ore bodies,the altered rock can be pided to 3 belts:strong pyrite beresitization belt-weak silicification carbonatization belt-propilitization belt.The strata in Yaosangnan Formation,the NNE trending fracture and strong silicification are important geological prospecting indicators;positive magnetic anomaly,medium-low electric resistivity,high polarization rate are important geophysical prospecting indicators;Ag,Pb,Zn elements soil anomalies are important geochemical prospecting indicators.
Keywords:
alteration belt;geological characteristics;Yaosangnan Formation;prospecting indicator;Bafenchang silver polymetallic deposit
