Specimen V4541 is identified as pyrite ooliths in sandstone (see Mitchell , Porter article: Rocks , Minerals, Vol. 60: 179-181 (1985)(also see Masters Thesis of Jim Oliveross, 1985, UVA Environmental Sci. Dept.). The physical location is given as U.S.Rt. 23, 3.3 mi. S. of Big Stone Gap, Wise Co., VA. The location coordinates were not recorded and are represented here by the county centroid. The specimen is stored in the DGMR Repository Storage Cabinet number 6, Drawer number 1.