Hello,
Let me start by apologizing for not reading the FAQ. I wanted to but I couldn't find it. I even searched in forums. I pulled down the menu on the right upper corner several times.
I live in northwest Arizona, about 25 miles south of the grand canyon. I recently acquired the neighboring 40 acres to me. Tons of fossils. But he left me these large green rocks and that's what this posting is about. I took this picture today, cloudy and just to send to my brother but then I remembered this site, so here I am. Any ideas on what these 3 green rocks are?