Colleagues: I once used a program by Nguyen and Jeanloz (1993) to convert a Gandolfi film to a digital diffractogram but now need a new approach. AI points to ImageJ or FIT2D to accomplish this but does so in a cryptic fashion. Has anyone done this and has a recipe/cookbook approach written down that works well, even understandable to an emeritus curator/professor? I threw out the JCPDS Fink and Hannewalt Search books, thinking I would never use them again, but now many films of yesteryear beckon as being valuable for validating species IDs in our mineral collection and help augment our databased catalog. TGIF, George George E. Harlow, Curator emeritus gharlow@amnh.org<mailto:gharlow@amnh.org> Dept. Earth and Planetary Sciences American Museum of Natural History 200 Central Park West, New York, NY 10024-5102 U.S.A. Phone (212)769-5378 FAX (212)769-5533 WWW: http://www.amnh.org/our-research/staff-directory/george-e.-harlow http://research.amnh.org/eps/jade/