矿产资源调查中自然重砂测量成果的重新应用——以河北蔚县地区为例

The re-application of placer mineral survey data in mineral resources investigation——A case study of the Yuxian area in Hebei

自然重砂测量是矿产勘查的重要手段之一。如何充分提取自然重砂测量数据所蕴涵的矿化信息,发挥其在矿产资源调查中的作用是一个现实问题。重矿物的被剥蚀、再沉积是自然重砂异常形成的重要过程。在充分考虑自然降水的汇集路径的前提下,以汇水区域边界确定范围是对自然重砂异常客观的解释。区域成矿模式研究、地球化学和人工重砂资料对自然重砂测量数据应用是重要的补充。笔者通过蔚县地区1∶20万自然重砂测量数据的分析,对其中有关全面认识异常、合理确定异常、勘查方法的综合应用、软件平台的使用及在矿产开发程度较高地区寻找未知资源的途径等方面做了一些探讨和尝试。

Natural placer mineral survey is one of the important methods of mineral investigation. It is a realistic problem how to fully extract mineralization information from placer mineral, give play to its role in mineral resources investigation. Denudation and re-deposition of heavy minerals is an important process in forming phcer mineral. By giving adequate cansideration ot the natural precipitation catchment way, it is an objective explanation that the boundary of the catchment basin is the scope of the placer mineral anomalies. The research on the model of region mineralization, geochemistry and heavy mineral concentrate data are important supplements to the application of the placer mineral suruey data. This article analyses the placer muineral survey data of the Yuxian area （1：200,000） and makes some studies and attempts in respect to understanding and evaluating anomalies, using the investigation method, applying the software platform, looking for unknown mineral resources in areas where the level of mineral exploration and exploitation is relatively high.