RT Journal Article SR Electronic T1 On scheeletine at the Southampton lead mine, Massachusetts, and uwarowite at Wood's chrome mine, Texas, Pennsylvania JF American Journal of Science JO Am J Sci FD American Journal of Science SP 215 OP 216 DO 10.2475/ajs.s2-41.122.215 VO s2-41 IS 122 A1 Shepard, Charles Upham YR 1866 UL http://www.ajsonline.org/content/s2-41/122/215.abstract AB