RT Journal Article SR Electronic T1 Notes on the crystal beds of Topaz Butte JF American Journal of Science JO Am J Sci FD American Journal of Science SP 135 DO 10.2475/ajs.s3-33.194.135-a VO s3-33 IS 194 A1 Walter B. Smith YR 1887 UL http://www.ajsonline.org/content/s3-33/194/135.2.abstract AB