Landscapes in Rocks

So continuing the 2nd brief I took some rocks into the studio.  I'd like to think of myself as a geologist but that isn't true, over the past 10 years I've seen pretty rocks on my travels and brought some back home, I have a cabinet full now.  So I banged the macro lens on the camera and took the following images.  Some were representative of the "Wave" formation in Arizona, others look like aerial views, any road.

"Amethyst"

"Calcite"

"Sandstone"

"Malachite"

"Mica"