If you compare values on the vitamins and nutrients that they contain, then you will find that both of them are extremely healthy for the body. Oranges have a good amount of vitamins A, B, and C in them, besides being rich in potassium, calcium, phosphorus, fibers, folic acid, iron, sodium, magnesium, and sulfur. Tangerines themselves are a good source of folate, beta carotene, potassium, magnesium, and vitamin B. So, for a healthy body, it is recommended to include both these citrus fruits in the diet.