土壤测量样品处理方法对金异常圈定的影响与应用——以湘东北棉花坡矿区为例

发布时间：2018-05-13 08:49

本文选题：金异常 + 土壤测量　；参考：《地质与勘探》2017年04期

【摘要】：在地质勘探的普查和详查工作中,土壤地球化学的指示作用是重要的决定性因素之一。随着地表及浅部矿产的开发,边深部盲矿体的找矿难度不断加大。按照目前的样品处理方法及技术要求,岩金矿区的矿化地段土壤测量分析数据被削弱,元素异常下限值偏低。为了解决异常贫化带来的异常圈定问题,本次研究对土壤样品的加工进行改进和调整。首次提出将野外采取的金矿土壤测量样细分,烘干处理后,不再进行过筛处理,并在湘东北醴陵市棉花坡金矿区的找矿普查工作中应用。对该区金矿土壤测量样品野外加工过筛与不过筛检测结果对比分析,未过筛样品能更客观、真实地反映矿区Au元素异常值情况,有利于指导找矿,取得了良好的找矿效果。因此,本次试验工作方法对指导类似金矿区土壤测量样品野外加工处理具有一定的借鉴意义。
[Abstract]:The indicative role of soil geochemistry is one of the important decisive factors in the geological prospecting and detailed investigation. With the development of the surface and shallow mineral resources, the prospecting difficulty of the blind ore body in the deep edge is increasing. According to the present sample treatment methods and technical requirements, the soil measurement and analysis data in the mineralized area of the rock gold mine are weakened, and the lower limit of element anomaly is low. In order to solve the problem of abnormal delineation caused by abnormal dilution, the processing of soil samples was improved and adjusted. It is proposed for the first time that the gold mine soil samples taken in the field should be subdivided, dried, and no longer sifted, and applied in the prospecting and general survey of the Mianlianpo gold deposit area in northeast Hunan Liling city. By comparing and analyzing the results of field processing and screening of gold mine soil measurement samples, the results show that the unscreened samples can reflect the abnormal value of au elements more objectively and truly, which is helpful to guide prospecting and obtain good prospecting results. Therefore, this experiment method has certain reference significance for guiding the field processing of soil survey samples in similar gold mine areas.
【作者单位】：湖南省有色地质勘查局二一四队;中南大学地球科学与信息物理学院;
【基金】：湖南省地勘基金项目(编号:20150346)资助
【分类号】：P618.51;P632.1

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