RT Journal Article SR Electronic T1 A quartz keratophyre from Pigeon Point and Irving's augite syenites JF American Journal of Science JO Am J Sci FD American Journal of Science SP 54 OP 63 DO 10.2475/ajs.s3-37.217.54 VO s3-37 IS 217 A1 Bayley, William Shirley YR 1889 UL http://www.ajsonline.org/content/s3-37/217/54.abstract AB