Phosphorite is a sedimentary rock primarily composed of phosphate minerals, mainly apatite. It is formed from the accumulation of organic materials, such as fish bones and shells, in marine environments. This rock is an important source of phosphorus, which is essential for plant growth and is widely used in fertilizers. Phosphorite deposits are typically found in shallow oceanic regions and can vary in color from dark gray to greenish. The mining of phosphorite is crucial for the agricultural industry, as phosphorus is a key nutrient that supports crop production and soil health.