Infants have daily requirements of about 5 grains of calcium. Ok looking at food like:
Milk contains 22,(grains of calcium in each quart). Eggs, cereals, rice, radishes, asparagus, and spinach are rich in calcium.
Meat, fish, bread, fruit, and potatoes are poor in calcium. Iron rich foods are are spinach and other green v egetables, yolk of egg, beef, apples, lentils, strawberries, white beans, peas, potatoes, wheat, and oatmeal.
While animal foods are rich in sodium and vegetables are rich in potassium.