The Oh-Be-Joyful Wilderness Study Area, near Crested Butte, Colorado, was studied. Resources of molybdenum are present in two deposits immediately adjacent to the area and are inferred at one location that is partly within the study area. These three overlapping areas have substantiated mineral-resource potential for molybdenum, and are surrounded by an area of probable mineral-resource potential for molybdenum. Another area of probable mineral-resource potential for molybdenum occurs in the northwestern part of the study area. Three areas that are entirely or partly within the study area, two of which contain resources of silver, lead, and zinc, have substantiated mineral-resource potential for those commodities. In addition, the western part, and a small area in the southern part of the study area have probable mineral-resource potential for silver, lead, and zinc. More than half the study area contains inferred coal resources and has substantiated mineral-resource potential for coal.