RT Journal Article SR Electronic T1 A basic dike near Hamburg,Sussex County, New Jersey, which has been thought to contain leucite JF American Journal of Science JO Am J Sci FD American Journal of Science SP 298 OP 305 DO 10.2475/ajs.s3-45.268.298 VO s3-45 IS 268 A1 Kemp, James Furman YR 1893 UL http://www.ajsonline.org/content/s3-45/268/298.abstract AB