The development of the chemical mineralogy in Russia in the late 18th - early 19th century in the works of V. M. Severgin

The late 18th and early 19th centuries saw a clear differentiation of sciences. First all, general mineralogy split into oryctognosy (mineralogy-proper), geognosy (geology), geogeny (geotectonics). Paleontology became discipline its own bit later, as well crystallography. Fossils rock formations were excluded from mineralogy. concept 'mineral' clearer. verbal description minerals was complemented with their accurate crystallographic measurements, the one-circle reflecting goniometer invented, methods crucial for mineral diagnostics. period between 1790es 1830es is characterized by rapid development chemical concepts, discovery many elements, study physical properties well-known newly-discovered minerals. V.M. Severgin played key role in establishment Russia. wrote numerous works chemistry published translated foreign scientists his contributions. As disciple M.V. Lomonosov's ideas, he proved that must be based on works. provided one first definitions subject deals decomposition components, compounding, changes they undergo due to processes. are historical value can seen source learning about history our country. Some ideas proposed remain relevant this day. These include following: 1 mineralogy; 2 applied paragenetic associations; 3 use mineralogical terms coined scientist.