Abrader, Stone Item Number: 1989-57/35-M-227 from the The Burke: University of Washington
Gray pumice abrader with a deeply grooved depression, one centimeter wide in the center on one side. Eight smaller (2mm wide) grooves intersect the deep groove diagonally. Seven or more grooves are on the opposite side of the abrader. M. Christopher 10/30/1998.
Great Basin Lake County, OR North America Oregon Plateau Western United States
Gift of Dr. Harold G. Bergen