RT Journal Article SR Electronic T1 Datolite from Loughboro, Ont JF American Journal of Science JO Am J Sci FD American Journal of Science SP 100 OP 102 DO 10.2475/ajs.s3-45.266.100 VO s3-45 IS 266 A1 Louis Valentine Pirsson YR 1893 UL http://www.ajsonline.org/content/s3-45/266/100.abstract AB