Auroramine was ponzi , that a lot of people fell for unfortunately. Any site that offers a guaranteed rate of return is likely too good to be true. There are a lot of sites like Auroramine that plan on just grabbing money from people.
Best of luck in future investments, maybe try your luck at Alt-coin trading. It requires work on your part but the returns are pretty good once you get the hang of it.
RE: Want to buy Mining Power? This are the only 2 sites i trust.