rocks are exposed as thick bands around the entire mountain system. The rising granite mass intruded the famed...an inexhaustible supply of cold artesian, Rocky Mountain snow melt water. Harney Peak is the crest of the...beds, excavations, etc.Selenite roses. BRULE COUNTY AREA: in the Oacoma zone of the Pierre Fm. On Elm...gray Barite rosette up to 5 or 6 inches. CAMPBELL COUNTY MOUND CITY, W to the Missouri R., regional hillsides...gravels, etc.petrified wood, wood opal. CORSON COUNTY LITTLE EAGLE: area ridges, slopes, stream beds |