Chocolate contains significant quantities of minerals such as magnesium, copper and manganese. It also contains vitamins such as vitamin B2 and B6. The chart below shows how different types of chocolate contribute to the recommended daily intake of vitamins and minerals (as defined by the (EU) No 1169/2011).
However, large amounts of chocolate should not be eaten with the aim of making it a viable source of vitamins and minerals in a diet, except for copper.
Based on data from the CIQUAL French food composition database 2016