This dataset comprises results of total soil chemical analyses of bulk sediment samples sampled along latitudinal and longitudinal transects between 19 - 25°S and 68.5 - 70.5°W (Atacama Desert, Chile). The soil samples consist of poorly cemented thin surface crusts, powdery chuca, and subsurface concretions from the transition to the costra. The analyses include: X-ray diffraction analyses, thermogravimetric analyses (gypsum content), ion concentration data (Na, Ca, K, Mg, Cl, SO4, NO3), organic/inorganic carbon data.