20091012_8086...Unknown green mineral at a prospecting site at Crater Island
While hiking up the summit ridge of a peak at Crater Island I encountered these rocks. They were in a shallow pile next to a pit about ten feet deep. The pit was dug in solid rock. On my descent (via a different route) I encountered two other long-abandoned prospecting sites.
Photographed on October 13, 2009 during a hike up Crater Island's Peak 5297.