ABSTRACT
CISMMI is a computer system for identification of ore minerals in a polished section using spectral reflectance curves in visible spectrum from 400–700 nm with some additional qualitative properties of minerals which can be observed with polarized microscope. The system comprises a series of programs for IBM compatible personal computer. The measured and calculated values are compared with those in a data file that contains data on over 640 minerals. The determination parameters are as follows: calculated reflectance value and degree of anisotropic rotation at 550 nm and coefficient of similarity of the curves. Every next parameter reduces the number of minerals to a limited set of most similar ones. In the output final list, the minerals are ordered by descending of their similarity to the tested mineral. For every mineral from the list one can call addition information on chemical formula and admixtures, symmetry, ranges of Vickers hardness number, internal reflexes, the colour values, degree of anisotropic rotation and mineral association. More then 300 samples of 58 minerals were tested and approximately in 90% cases the right name of the mineral was among the first three names of the result list, and in 50% cases the right name was in the top.
