naa a22 4500 510736505 CHVBK 20180411083012.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1134/S1075701513080084 doi (NATIONALLICENCE)springer-10.1134/S1075701513080084 Masaitis V. All-Russia Geological Research Institute, Srednii pr. 74, 199106, St. Petersburg, Russia aut Impact diamonds of the Popigai astrobleme: Main properties and practical use [Elektronische Daten] [V. Masaitis] In the 1960s, the so-called "schistose” placer diamonds were found in sandy sediments of Ukraine. Their primary source remained unknown and their origin was supposed to be cosmic, by analogy with the diamonds detected in some meteorites. In the early 1970s, similar diamonds were found in terrestrial rocks of the Popigai impact crater (astrobleme) in northern Siberia. It was shown that these diamonds are products of the transformation of graphite contained in gneisses (Masaitis et al., 1972). Later, such diamonds were found in other astroblemes in Russia, Ukraine, Germany, Finland, and Canada. Impact diamonds markedly differ from diamonds hosted in kimberlites and lamproites in their appearance and in other features. In the 1970s-1990s, diamonds from the Popigai astrobleme were studied in many research institutions of Russia, Ukraine, and outside the USSR. The results of these investigations have been mostly published, and my brief review is based on these data. Pleiades Publishing, Ltd., 2013 Geology of Ore Deposits Springer US; http://www.springer-ny.com 55/8(2013-12-01), 607-612 1075-7015 55:8<607 2013 55 11477 https://doi.org/10.1134/S1075701513080084 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1075701513080084 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Masaitis V. All-Russia Geological Research Institute, Srednii pr. 74, 199106, St. Petersburg, Russia aut NATIONALLICENCE 773 0- Geology of Ore Deposits Springer US; http://www.springer-ny.com 55/8(2013-12-01), 607-612 1075-7015 55:8<607 2013 55 11477 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer