Rockland

BUTLER,B.S., BURBANK,W.S. (1929),THE COPPER DEPOSITS OF MICHSGS PROF. PAPER 144.WHITE,W.S. (1968), THE NATIVE-COPPER DEPOSITS OF NORTHERN MIIN ORE DEPOSITS OF THE UNITED STATES, JOHN D. RIDEE-EDITOR.THE AMER. INST. OF MINING, METALLURGICAL, AND PETROLEUM ENGBRODERICK,T.M., HOHL,C.D., EIDEMILLER,H.N. (1946), RECENT COIONS TO THE GEOLOGY OF THE MICHIGAN COPPER DISTRICT:IN ECONOLOGY AND THE BULLETIN OF THE SOCIETY OF ECONOMIC GEOLOGISTS.I.ALLEN,R.C.(1910), MINERAL RESOURCES OF MICHIGAN: ANNUAL REPOHE BOARD OF GEOLOGICAL AND BIOLOGICAL SURVEY FOR 1911.HORE,R.E.(1914), MINERAL RESOURCES OF MICHIGAN: ANNUAL REPORE BOARD OF GEOLOGICAL AND BIOLOGICAL SURVEY FOR 1914.WHITLOW,J.W. (1974) GEOLOGIC MAP OF THE GREENLAND AND ROCKLARANGLES, ONTONAGON COUNTY, MICHIGAN. USGS MAP ME-596.