Soil Geochemistry Dataset from the Sierra Minera (Cartagena–La Unión Mining District)

This dataset contains soil geochemistry measurements from the Sierra Minera mining district (Cartagena–La Unión, SE Spain). The data originate from multiple laboratory spreadsheets and analytical reports compiled during soil studies conducted in the mining district. The dataset integrates heterogeneous Excel sources including: • total elemental concentrations in soils • DTPA-extractable trace elements • sequential extraction results (BCR method) • urban and agricultural soil samples • laboratory analytical reports Main source files included in the dataset: - Totales_Suelos.xlsx - DTPA_AGRICOLAS_NATURALES.xlsx - Suelos_Agricolas_Inma_UBM_BARGE_BCR.xlsx - TABLA_RESULTADOS_SUELOS_URBANOS.xlsx - Laboratorio_SYNALAB_todos_los_resultados_por_capa_sellado.xlsx - ALEDO GUILLERMO BUENO.xls These files contain sample identifiers, UTM coordinates and elemental concentrations for soils collected in the Sierra Minera. The dataset is provided in its original heterogeneous format and serves as the primary data source for subsequent data integration and spatial analysis pipelines.