STATE OF SOUTH DAKOTA Nils Boe, Governor MINERALOGY OF THE BLACK HILLS by WILLARD LINCOLN ROBERTS...Mineralogy Museum of Geology, South Dakota School of Mines and Technology and GEORGE RAPP, JR. Curator of...Geology, and Associate Professor of Mineralogy, Department of Geology and Geological Engineering, South Dakota...Dakota School of Mines and Technology With the Editorial Assistance of RICHARD L. BARTELS, Instructor...Mineralogy South Dakota School of Mines and Technology BULLETIN NUMBER 18 of the South Dakota School of |