Title: MINFILE Keywords: Mineral Data Analysis Computer: IBM PC, XT, AT, PS2 or compatible Operating System: MS-DOS 2.1 or higher Programming Language: MS QuickBasic (Source Included) Hardware Requirements: Epson compatible printer for output. Author(s): Abdulkader M. Afifi* & Eric J. Essene Correspondence Address: Department of Geological Sciences, University of Michigan, 1006 C.C. Little, Ann Arbor, MI 48109 *Present address: P.O. Box 297, Jeddah, Saudi Arabia Abstract: MINFILE is a menu-driven program for the storage and manipulation of chemical data on minerals. The program package consists of 5 self-extracting ZIP archives, MFDAT.EXE, MFTXT.EXE, MINDOS.EXE, MIN.EXE and MINBAS.EXE. The program contains subroutines for rapid normalization of chemical analyses of any compound into a formula on the basis of a specified number of cations or oxygens, for conversion of elements to oxides and of oxides to elements, for performing arithmetic operations, and for plotting. Several external subprograms are provided to optimize normalizations and distribution of elements among sites for specific mineral groups.