“…) No occurences of vermiculite or other altered mafic rocks were observed within the study area, although a large mass of mafic rocks is adjacent to pegmatites south of the study area boundary. Although the U.S. Forest Service Platte River Wilderness Area is reported to have moderate potential for vermiculite (Dickerson, 1986), the resource potential for vermiculite in the BLM wilderness study area is considered low, with a certainty level of C.…”