Soy beans contain significant amounts of phytic acid, dietary minerals and B vitamins. Sardines are rich in vitamins and minerals. It is found in many crystalline materials including polymers, minerals, and metals. Cuttlebones help provide beak-trimming and a source of calcium and other necessary minerals. Dagestan is rich in oil, natural gas, coal, and many other minerals. Oca is a source of carbohydrates, dietary minerals, and protein. Many soil colours are due to various iron minerals. The sea holds enormous quantities of valuable dissolved minerals. BMW are abundant minerals and trace elements. Malaysia is well-endowed with natural resources in areas such as agriculture, forestry and minerals. Intergrowth with other secondary copper minerals such as chrysocolla is also common. Iron exists in both primary zone minerals. The Himalayas are also a source of many minerals and precious stones. B2 horizons have a high concentration of clay minerals or oxides. Coal is composed of macerals, minerals and water.