Rock phosphate is a naturally occurring mineral used primarily in the production of fertilizers. It is rich in phosphorus, an essential nutrient for plant growth, playing a critical role in photosynthesis, energy transfer, and nutrient movement within the plant. The mineral is typically applied directly to the soil or used in the manufacturing of phosphate fertilizers such as superphosphate and ammonium phosphate.
Salt, or sodium chloride, is a mineral essential for human health and widely used in food, chemical production, and industrial applications. It plays a vital role in maintaining fluid balance, nerve function, and muscle contraction in the human body. Salt is also a key ingredient in food preservation, seasoning, and various chemical processes.