u/Odd-Olive81

I joined Reddit just to find help with this. On a recent trip to Northern AZ I picked up some neat green rocks on an unpaved parking area. It looked like it was back fill from a nearby post hole that was dug out. Google tells me it could be chromium rich green petrified wood, but also that this would be extremely rare. It's a dark minty green that gets darker when wet. The chunks tend to be cylindrical with white/cream quartz like cores. Is that was this is? Is that really as big a deal as Google makes it sound??