黑龙江省嫩江—黑河构造混杂岩区永新金矿热液蚀变与矿化关系定量及定位研究

发布时间：2019-06-05 03:15

【摘要】：黑龙江省嫩江县永新金矿是近几年在嫩江—黑河构造混杂岩地区新发现的大型断裂带蚀变岩型金矿床,矿石矿物主要为碲金矿、碲金银矿、自然金,有少量的硫化物及氧化物。通过钾长石化带、绢云母化带及硅化带厚度与矿体厚度的线性关系分析得出,本区钾长石化带厚度、硅化带厚度与矿体厚度呈正相关关系,绢云母化带厚度与矿体厚度呈负相关关系。蚀变带厚度及矿体厚度水平面投影结果表明,矿区内热液蚀变在水平方向上具有明显的分带现象,自矿区东南到西北呈"阶梯状"分布,且绢云母化带厚度高值区、钾长石化带厚度高值区及硅化带厚度高值区在各阶梯中具有一定的对应关系。据以上分析,永新金矿成矿流体来自北西方向,矿体总体向北西延伸,暗示矿区西北深部具有较好的找矿前景。
[Abstract]:Yongxin gold deposit in Nenjiang County, Heilongjiang Province, is a large fault belt altered rock type gold deposit newly discovered in Nenjiang Heihe structural melange area in recent years. The ore minerals are mainly tellurium gold deposit, tellurium gold and silver deposit, natural gold, and a small amount of sulfides and oxides. Through the analysis of the linear relationship between the thickness of potassium feldspar zone, sericite zone and silicification zone and the thickness of orebody, it is concluded that there is a positive correlation between the thickness of potassium feldspar zone, the thickness of silicified zone and the thickness of orebody in this area. There is a negative correlation between the thickness of sericite zone and the thickness of orebody. The horizontal projection results of the thickness of the alteration zone and the thickness of the orebody show that the hydrothermal alteration in the mining area has obvious zoning phenomenon in the horizontal direction, and it is distributed in a "ladder" form from the southeast to the northwest of the mining area, and the sericite zone thickness is high. The high thickness region of potassium feldspar zone and the high thickness region of silicification zone have certain corresponding relations in each ladder. According to the above analysis, the metallogenic fluid of Yongxin gold deposit comes from the northwest direction, and the orebody generally extends to the northwest, suggesting that the deep part of the mining area has a good prospecting prospect.
【作者单位】：中国地质大学(北京)地球科学与资源学院;黑龙江省地质调查研究总院;
【基金】：黑龙江省国土资源科研项目“黑龙江省嫩江-黑河构造混杂岩地区成矿规律研究与找矿预测”(黑国土科研201603) 国家重点研发计划“深地资源勘查开采”重点专项课题(2016YFC0600106)
【分类号】：P618.51

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