Nice mixture of Chrysocolla and Quartz from the Big Horn Mountains of Arizona. Much of the time the Chrysocolla is in a thin layer that when the rock breaks, it breaks on the thin layer and appears that the piece is solid Chryoscolla when you're actually looking at the thin layer only and under it will be matrix. I cut this piece in half to see that it's a nice quartz/Chryoscolla mix throughout that polishes nicely. It almost appears to be agatized bone with cells and all but I think the cells are actually quartz specks. WET pic.-(5 oz. )half nodule no fractures