Why is it so difficult to work on geochemical composition? Supervised geochemical composition data processing to study colouring iron oxide rich rocks in archaeological contexts - data set

Matrix compilation dataset use for statistical analysis on geochemical compositional data on Pigmentothèque project references (Connaux, Huy, Bordezac, Roussillon, Thoste, Pierremorte, Pierrerue) and Grotte aux Points artefacts. Sheet 1 : compositional raw data in ppm with associated error (fit error = calculation error)Sheet 2 : compositional data normalised by iron composition, formula in the cellSheet 3 : Sheet 2 clean Sheet 4 : log 10 normalised data set from sheet 3, formula in the cellSheet 5 : Sheet 4 clean本数据集为用于色素库项目（Pigmentothèque）参考文献（Connaux、Huy、Bordezac、Roussillon、Thoste、Pierremorte、Pierrerue）及Grotte aux Points出土人工制品的地球化学组成数据统计分析的矩阵编译数据集。数据表1：以ppm为单位的组成原始数据及配套误差值（拟合误差=计算误差）；数据表2：经铁元素组成归一化处理的组成数据，归一化公式标注于对应单元格内；数据表3：数据表2的清理后数据集；数据表4：基于数据表3生成的以10为底的对数归一化数据集，归一化公式标注于对应单元格内；数据表5：数据表4的清理后数据集。