In the time you posted this you could have wikied this. Believe me, this is a topic that's safe to Wiki.
Don't worry... it's the end but the moment has been prepared for... you can still find me bashing the New 52 and other things comic book related at www.ImWithGeek.com
A vitamin is an organic compound required as a vital nutrient in tiny amounts by an organism. (from Wikipedia)
There are two meanings for Minerals, one are the shiny crystals that geologists (and me) collect, and the other one is a solid inorganic substance of natural occurrence.