From a person OBSESSED with makeup I believe you have quite a few options. Ofcourse there is Bare Escentuals, its like the NIKE of mineral makeup these days. It can be pricey though but it I think its worth it. Almost every other supermarket brand has a line of mineral makeup as well. In my opinion Almay and L'Oreal have very good mineral brands. If you just want a light coverage and want to add a shimmer I use a translucent powder from CoverGirl $7-$8. It doesn't provide the coverage as mineral makeup but it does add a little shimmer and with blush it really looks about the same as if I were wearing mineral makeup.
A couple things you should know about mineral make-up. If you have an olive to dark skin tone and tan easily, one color may not work for you. (this is especially true with bare escentuals) In this case you can mix the colors. Supermarket brands tend to have more color options so you can experiment.
Lastly, I would recommend going to a Sephora (the candy land of beauty product aficionados) it carries bare escentuals and they will help you find your match and experiment with other make-up. Good Luck!!!!