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内蒙古石尖山地区是内蒙古北部重要的成矿带,已发现一批铁、锌、铅、银、钼、萤石成矿靶区,具有优越的成矿地质背景和巨大的成矿潜力。石尖山地区属于高原山区,植被覆盖率高,地面地质工作开展难度较大,因此,在该地区开展遥感找矿研究是一种经济便捷且有效的勘察手段。以ETM+数据为基础,在ENVI软件的支持下,根据与蚀变矿物组合相关的波谱特征,通过波段比值、主成分分析、彩色空间变换等方法,对石尖山地区铁染、羟基、金矿化等蚀变信息进行提取,并结合基础地质资料,划定预测靶区,取得了很好的效果。
The Inner Mongolia Shijian Mountain is an important metallogenic belt in the northern part of Inner Mongolia. A number of iron, zinc, lead, silver, molybdenum and fluorite target areas have been discovered, which have the advantages of metallogenic geological background and huge metallogenic potential. Rocky Mountain area belongs to the plateau mountainous area, which has high vegetation coverage and difficult ground geological work. Therefore, conducting remote sensing prospecting research in this area is an economical and effective survey method. Based on the ETM + data, supported by ENVI software, based on the spectral characteristics related to the alteration mineral assemblages, the authors analyzed the characteristics of iron dye, hydroxyl, gold mineralization in Shijianshan area by band ratio, principal component analysis and color space transformation And other alteration information extraction, combined with the basic geological data, delineation of the target prediction, and achieved good results.