No 5 (2025)

The relevance of this article lies in the assessment of the prospects for ore-bearing mineral composition of ores, its diversity in the West Yangi-Umid area. The subject of the research is ore minerals, stages of hypogene mineral formation. In the process of research, we used geological documentation of ore-bearing and mineralized zones, sampling, sample preparation for chemical and geochemical analysis, description of thin and polished sections, mineralogical analysis of gravity enrichment products, X-ray spectral microprobe studies, identification of vertical zoning of mineralization, a scheme of the stages of hypogene mineral formation based on mineragraphic data. As a result of research, 26 ore minerals in the Western Yangi-Umid area were identified. A wide range of mineral formation — from the early oxide stage with magnetite-hematite PMA to quartz-calcite-barite-fluorite carbonate-fluoride stage indicates the prospects of the Western Yangi-Umid site. Among them, the pyrite-arsenopyrite with gold PMA of the early sulphide stage and gold-silver PMA of the same stage are productive for gold.

The article presents an overview of degassing processes and their traces based on the results of long-term observations and analytical studies by the author while working on the research vessel “Professor Logachev”. On it, the Polar Marine Geological Exploration Expedition conducts research, including video observations in the axial zone of the Mid-Atlantic Ridge (MAR). Since 2012, work has been conducted within the Russian Exploration Area (REA), located on the Mid-Atlantic Ridge at coordinates from 20° to 13° N. During this time, several thousand linear kilometers of bottom video were filmed. The author of this review took part in eighteen such cruises, so she had the chance to directly observe various signs of degassing processes on the ocean floor. They are manifested in the form of small (rarely exceeding the first meters in diameter) channels in sediments and unusual patterns on sediments, as well as cracks, faults and channels in the underlying rocks. In addition, all hydrothermal structures, including chimneys of active and inactive smokers, are also the result of degassing processes. Within the young volcanic structures, both caldera and slot types, sintered sediments were raised, saturated with ash and fresh volcanic glass (the size of glass fragments rarely exceeds 1 cm). Such rocks are classified as tuffites, and its formation is also related to the degassing processes.

In the year of the 80th anniversary of the Victory in the Great Patriotic War, the Institute of Geology of the Komi Scientific Centre UB RAS prepared for printing a special edition ‘The fathers who forged the Victory’ with brief biographies, memories and photographs of veterans. The publication contains a gallery of warriors — workers, as well as fathers, mothers, grandfathers of the Institute of Geology employees. Some memories of battles and wartime are given. All this is collected to keep in every family, so that we’ll remember and our descendants will know about the price of the Great Victory. We publish a small excerpt from this special issue about the frontline youth of IG Komi SC employee V. I. Esev (19.12.1922—15.05.1994).