Potassium sulfate occurs naturally in a few salt lakes like The good Salt Lake in Utah. Additionally it is present in some volcanic lavas. In mother nature, it can be commonly blended with salts containing magnesium, sodium, and chloride. the place lnR represented the natural log from the reaction ratio https://potassiumsulfatefertilize12457.ampblogs.com/the-definitive-guide-to-which-fertilizer-contains-potassium-66411713