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You can combine different vegetable sources to obtain all aminoacids needed (or maybe have a transgenic methionine producing soy plant

Iron, Calcium and Zinc are easy to obtain. Vitamin B12 is harder, people would need supplements.

When the supplements run out would they need to get a new shipment from earth?

I can't imagine it would be that difficult (relatively speaking) for the colony to synthesize B12 from bacteria or fermentation.

> Iron, Calcium and Zinc are easy to obtain

When you're trying to grow plants in artificial environments on an inhospitable planet 40 million miles from earth? Oh, okay...

Yes they are. Chemical elements are the same everywhere. Minerals on Mars are similar as well.