RT Journal Article SR Electronic T1 On the occurrence of a large area of nepheline syenite in the township of Dungannon, Ontario JF American Journal of Science JO Am J Sci FD American Journal of Science SP 10 OP 16 DO 10.2475/ajs.s3-48.283.10 VO s3-48 IS 283 A1 Adams, F. D. YR 1894 UL http://www.ajsonline.org/content/s3-48/283/10.abstract AB