Galpin, Sidney Longman, 1886- A preliminary report on the feldspar and mica deposits of Georgia, by S.L. Galpin. - Atlanta, Ga., C.P. Byrd, state printer, 1915. - xii, 190 p. illus., ix pl., fold map. 26 cm. - Georgia. Geological survey,1890- Bulletin no. 30 . LCCN: gs 15000406 Subjects--Topical Terms: Feldspar.Mica. LC Class. No.: QE101 / .A12 no. 30