PT - JOURNAL ARTICLE AU - Brackett, Richard Newman AU - Williams, J. F. TI - Newtonite and rectorite; two new minerals of the kaolinite group AID - 10.2475/ajs.s3-42.247.11 DP - 1891 Jul 01 TA - American Journal of Science PG - 11--21 VI - s3-42 IP - 247 4099 - http://www.ajsonline.org/content/s3-42/247/11.short 4100 - http://www.ajsonline.org/content/s3-42/247/11.full SO - Am J Sci1891 Jul 01; s3-42