Normal
You are thorough in explaining what it is you need to say. Thanks, that's nice. As you mentioned before in order for it to be an experiment it requires a control, which, there is not. Nitrate, iodine, lithium, sulpher, copper, silver, alluvial soil, mineral sediments from the Andes, thick fogs, mudslides, gypsum cement, hyperarid, fluvial deposits, paleosol, halite, saline minerals, no accumulation of calcium carbonate, no accumulation of clay minerals, basically a place that as you mentioned has a number of unknowns. Halite is salt a natural form of salt, generally found in arid regions, dissolves to brine which is increasing in the Atacama found in newer soils, also, sodium chloride. Gypsum is a salt, lithium a salt, and the fish water tonic salt is listed on it's lengthy data safety sheet as sodium chloride. Again sodium chloride is found in the newer soils of the Atacama not just in salt flats.