Reference | {Deposit:: TRIMBLE, D.E., AND MACHETTE, M.N., 1979, GEOLOGIC MAP OF THE COLORADO SPRINGS-CASTLE ROCK AREA, FRONT RANGE URBAN CORRIDOR, COLORADO: USGS MAP I-857-F.}{Deposit:: SCOTT, G.R., AND WOBUS, R.A., 1973, RECONNAISSANCE GEOLOGIC MAP OF COLORADO SPRINGS AND VICINITY, COLORADO: USGS MAP MF-482.}{Deposit:: PEARL, R.M., 1965, COLORADO GEM TRAILS AND MINERAL GUIDE: DENVER, SAGE BOOKS, P. 169-171.}{Deposit:: OVER, EDWIN, JR., 1929, SOME MINERAL LOCALITIES OF EL PASO COUNTY: ROCKS AND MINERALS, V. 4, NO. 4, P. 106-107.} |