| Reference | {Deposit:: HEDLUND, D.C., AND OLSON, J.C., 1975, GEOLOGIC MAP OF THE POWDERHORN QUADRANGLE, GUNNISON AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1178.}{Deposit:: BUSH, A.L., 1951, SOURCES OF LIGHTWEIGHT AGGREGATES IN COLORADO: COLORADO SCI. SOC. PROC., V. 15, NO. 8, P. 339-340.}{Deposit:: LA PLANTE, F.R., 1943, GUNNISON COUNTY ACTIVITIES: COLORADO MINING ASSOC. 1943 MINING YEARBOOK, P. 35-36.}{Deposit:: ALEXANDER, J.D., 1944, ALEXIT* YEAR OF GROWTH: COLORADO MINING ASSOC. 1944 MINING YEARBOOK, P. 85.}{Deposit:: OLSON, J.C., 1974, GEOLOGIC MAP OF THE RUDOLPH HILL QUADRANGLE, GUNNISON, HINSDALE, AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1177.} |