Pegmatite Vein
Aspen Mine, Aspen Mining District, Pitkin County, Colorado, USA
I discovered this pegmatite vein while panning for gold. It is the Grottos, Independence Pass, Aspen, Pitkin County, locality. The vein occurs in 1.4 billion year old Berthoud Pluton granite. I found Allanite-(Ce), Uranopolycrase, Monazite-(Ce), and Cyrtolite here. The vein is approximately 15 feet long by 9 feet wide. Photo; Rudy Bolona, August ...