RT Journal Article SR Electronic T1 Analyses of two varieties of lithiophilite (manganese triphilite) JF American Journal of Science JO Am J Sci FD American Journal of Science SP 176 DO 10.2475/ajs.s3-26.153.176 VO s3-26 IS 153 A1 Samuel Lewis Penfield YR 1883 UL http://www.ajsonline.org/content/s3-26/153/176.abstract AB