Help identifying a Wyoming rock?
I picked up this rock in the wind river mountains of wyoming and was wondering if anyone can help me identify it more precisely. I'm a relative neophite to rock and mineral collecting. To me it looks like granite, polishes nicely. What is the green color from is it another mineral in the rock?
Photos are available
Thanks for the assistance
From Gerard Kindt - November 28, 2007 at 18:50:28