Non organic mineral deposits of sedimentary environment can be separated into three groups, based on the way mineralizing fluid moves. a. Sedinientogenic deposits; b. Hydatogenic deposits; and c. Hydatogenic-supergenic deposits or "sebkha" deposits. Deposilional environment, the ore composition and the ore gaps are other features that allow the division of these three groups in subgroups, types and subtypes. The final classifícation proposed contaiiis 20 different types of non organic deposits of sedimentary enviromiients. A final discussion deals with more complicated deposits, as the Zambia-Zaire copperbelt, the Kupferschiefer deposits, the high teinperature hydatogenic deposits and the chemical-sediinentary deposits generated by volcanogenic fluids. As an example of the practice of the classification, 123 Brazilian mineral deposits were classified according the proposed criterion.
