PT - JOURNAL ARTICLE AU - F. A. Genth TI - Contributions to mineralogy AID - 10.2475/ajs.s3-40.236.114 DP - 1890 Aug 01 TA - American Journal of Science PG - 114--120 VI - s3-40 IP - 236 4099 - http://www.ajsonline.org/content/s3-40/236/114.short 4100 - http://www.ajsonline.org/content/s3-40/236/114.full SO - Am J Sci1890 Aug 01; s3-40