Washington: United States Government Printing Office, 1995. softcover, 11" x 8.5", 36 pages, from the abstract, "Of the 70 known Early Proterozoic massive sulfide deposits and prospects in Arizona, 48 have production data that can be used to infer differences about the origins of the various deposits." More

Tuscon, Arizona: University of Arizona, 1983. softcover, 8.5" x 11", foldout inside rear cover, 58 pages, initials written on cover. Mineral districts presented herein and delineated on the enclosed map were defined according to geological criteria. The principal goal was to arrange known metallic mineral occurrences into discreet metallogenic systems..... More