RT Journal Article SR Electronic T1 The origin of the soda-granite and quartz-keratophyre of Pigeon Point [Minnesota] JF American Journal of Science JO Am J Sci FD American Journal of Science SP 273 OP 280 DO 10.2475/ajs.s3-39.232.273 VO s3-39 IS 232 A1 Bayley, William Shirley YR 1890 UL http://www.ajsonline.org/content/s3-39/232/273.abstract AB