General geologic mapping and detailed studies of many mica, feldspar, and kaolin deposits have been made by the U. S. Geological Survey since 1939 in the Spruce Pine pegmatite district, North Carolina. Much of this work has been in cooperation with The North Carolina Department of Conservation and Development. The area is near the western border of the state, in Avery, Mitchell, and Yancey Counties. The major mineral products of the area are feldspar, kaolin, scrap mica, and sheet mica. Other minor or potential mineral products include beryl, columbium-tantalum minerals, quartz, rare earth and uranium minerals, amphibole asbestos, building stone and crushed rock, chromite, garnet, kyanite, mica schist, olivine, and vermiculite. Includes 33"x20" geologic map. By John M. Parker, III, 1952. 26 pages.