磁铁石英岩型铁矿岩芯光谱编录研究

 对河北省昌黎县闫庄铁矿床的磁铁石英岩型铁矿石261件样品进行了光谱反射率测量，并与其铁含量进行了相关关系研究，目 的是对钻孔岩芯编录的新方法即高光谱岩芯编录在此类矿床中的可行性进行分析。研究结果表明，铁矿石反射率较低，一般为5%~20% ，铁离子的吸收峰主要表现在400~1 100 nm范围内，铁矿石中铁含量与850~900 nm的反射率均值呈现显著指数负相关关系，为高光谱 岩芯编录在此类矿床中的可行性提供了理论依据和技术途径。

A DRILL CORE SPECTRAL LOGGING STUDY IN A MAGNETITE-QUARTZITE TYPE IRON DEPOSIT

The authors examined the capability of reflectance spectroscopy for drill core logging in the Yanzhuang magnetite- quartzite type iron deposit of Changli county, Hebei province. 261 rock samples were collected for chemical analysis and spectral measurement. The results show that the reflectance of iron ore is low, generally between 5% - 20%. The absorption band of iron ion is in the range of 400 - 1100 nm. The content of iron shows significant negative exponent correlation with the average reflectance of 850 - 900 nm, and this provides a theoretical and technical basis for hyperspectral drill core logging in this kind of ore deposits.