Cedar Canyon - Sple. No. 1

SRC.REF: GILL AND MOORE, 1955 , USGS BULL. 1009 - IGILL, JAMES R. AND MOORE, GEORGE W., 1955 , CARNOTITE-BEARING SANDSTONE IN CEDAR CANYON, SLIM BUTTES, HARDING COUNTY, SOUTH DAKOTA, USGS BULL. 1009 - IPETSCH, BRUNO C., 1955 , GOVERT QUAD, SOUTH DAKOTA GEOLOGICAL SURVEY