Евгений Иванович Семёнов
1927 г. рождения.
С 1996 года работает в Минералогическом музее. Исследователь минералов редких
земель. Показал, что каждый из шестнадцати редкоземельных элементов имеет
собственные минералы и генетические типы концентраций. Открыл около 30 новых
минералов. Предложил новую систематику минералов с опорой на многовалентные
ионы с низким координационным числом. Создал новую классификацию месторождений,
основанную на парагенетических ассоциациях минералов. Основные научные работы:
"Минералогия щелочных массивов и их месторождений." Изд-во АН СССР,
1974; "Систематика минералов." М., Недра, 1991; "Оруденение
и минерализация редких земель, тория, урана (лантанидов и актинидов)."
Геолиздат, 2001г.
В честь В.И. Семенова был назван:
Семёновит - обнаружен в щелочном массиве Илимаусак (Ю. Гренландия) в
пустотах и трещинах альбита, содержащего эпидидимит и эвдидимит. Образует кристаллы
0,1-1,0 мм, реже до 10 мм, дипирамидального облика красновато-бурого, бледно-буровато-серого
цвета со стеклянным блеском, нарастающими на эвдидимит. На кристаллы семёновита
нарастает натролит. Авторы: O.V. Petersen, J.G. Ronsbo. Lithos, v. 5, ╧ 2, p.163-173.
Издана
книга ведущего научного сотрудника Музея доктора геолого-минералогических наук
Семенова Е.И. Оруденение и минерализация редких земель,
тория и урана (лантанидов и актинидов). 307с., 44 илл., библиогр.
68 назв. , где впервые совместно рассматривается геология (преимущественно минералогия
и рудогенез) большой группы сходных элементов 3-го периода системы Менеделеева.
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Graduated 1950 from Moscow Geological-Prospecting Institute. Post-graduate student in IGEM -Institute of ore geology and mineralogy in Academy of Sciences USSR.
Currently Premier research scientist at the Fersman Mineralogical Museum RAS
D.Sc. 1963 in IGEM "Mineralogy, geochemistry and deposits of rare earths". (RE=Ln,Y,Sc). Curator for REE in Ministry of Geology USSR, gave REE-programs for 5-year plans and balances of REE in deposits of all republics of the former USSR. Expert and consultant of the United Nations Development Program in India (Madras 1968-1970; Raipur 1979-1982). Expert in international geological expeditions in China (1958,1959), Greenland (1964,1982), Canada (1966,1978) Visited and took part in mineralogical-geochemical study of many world-known rare-metal deposits: Khibiny-Lovozero (Kola), Anabar (Yakutia), Aktijus (Kirgysia), Bayan Obo (China), Ilimaussaq (Greenland), Saint-Hilair (Canada), Manavalacurichi (India), Pocos da Caldas (Brazil) etc.
Described 50 new minerals in Russia, Tadjikistan, China, Canada, Greenland: tundrite, darapiosite, huanghoite, lemoynite, ilimaussite etc - minerals of nearly all rare metals: Li, Ba, Sr, Sc, Y, Ln, Zr, Th, U, Nb, Ta. Tundrite which was found on Kola, is now known also in Greenland and Canada. Some of those new minerals have economic importance: biotite and tugtupite as precious stones, huanghoite and magbasite as raw materials (Ln, Sc, Nb). Found new types of ores (chkalovite, epididymite - for beryllium, zircon without hafnium etc). Discredited about 10 old minerals of other authors (angaralite, didymolite etc). Expert in various mineralogical methods, especially optics. In the monograph "System of minerals" (1991,1981) proposed new classification of' all known minerals according to valence of main ion divided on his coordination number. Showed importance of this number for selective or complex type of Ln-distribution in RE-minerals. Demonstrated that not only yttrium and cerium REE-groups but each of these 16 elements have their own minerals and types of ores. For instance, aeschynite is neodimium (without Ca, Y) mineral of alkaline hydrothermalites. Showed, that in case of low concentration of isomorphic pairs of elements their ratio (Ce/Yb, Zr/Hf, Nb/Ta etc) is small. Gave classification of the alkaline rocks according to activity of Na, K, Li, Ti and haloides (F, Cl) in rock-forming biopyriboles - mainly amphibolous. With his leading participation the list of Khibiny-Lovozero minerals is now approaching to 500 - twice more that of any other deposit of the world. Under his guidance 10 geologists got their Ph.D. and D.Sc. degrees. Gave courses of lectures on "Geology of rare elements" and "Geology of alkaline massives and their deposits" in Moscow University (1988, 1994), Kopsnhagen University (1993,1995), Toulousa University (1995), Raipur University (1982). In Rio de Janeiro and San-Paulo (Brasil) University (1995) 60-hours course "Minaralogy, geochemistry, crystal-chemistry, oredeposits, economics and geoecology of rara elements" was given. Member of the editorial bureau of magasine "Russian Geology", member of the council of Mineralogical Society, membercorrespondent of the Russian Academy of Natural Sciences. Published 18 books and 150 articles (first -in 1953) in Russian, English, French, Chinese. Speaks English and reads French and German. Took the most active part in 3-volume book of IMGRE "Geology, mineralogy and genetic types of deposits of rare elamants" and received for that the USSR State Prise. Received Fersman-prise of USSR Academy of Sciences for the study and discovery many new minerals of alkaline massives. New RE-Be silicate -semenovite was named in honor by Danish geologists. Plan of lectures of Prof. SEMENOV Evgeny 1. Geology of rare element deposits, especially in the former USSR (Types of deposits, mineralogy, main features of geochemistry, ecology, prospecting and evaluation) a) Rare alkalies (Li, Rb, Cs) b) Beryllium, strontium c) Rare earths (Sc, Y, La-Lu) d) Zirconium, hafnium e) Niobium, tantalum f) Main features of geology of chalcophylic elements (Cd, Hg, Ga, In, Tl, Ge, Sb, Bi, Se, Te) 2. Rare metal precious stones (Li, Be, RB, Zr, Ta) in Transbaikal, Urals, Kola, Yakutia. 3. New ore deposits of Russia 4. Alcaline massives (especially Lovozero, Khibiny on Rola) and their huge deposits of P, Nb, Ta, Zr, Y, La, Al, Ga, K, Rb. 5. New minerals (more than 200) found in Russia and former USSR and minerals for collections: a) Nepheline syenites (Lovozero, Khibina, Murun in Aldan) b) Alkalic granites (Keyvy on Kola, Darapios in Tadjikistan) c) Granite pegmatites (Kola, Altay, Transbaikal) d) Beryllium hydrothermalites (Ermakovka in Burjatia) e) Borous salts and skarns (Urals, Burgatia, Inder in Kazakhstan) f) Uranium hydrothermalites and their zone of oxidation (Streltsovka in Transbaikal) g) Ptg-Ni-Cu sulfides (Norilsk on Taymyr) h) Volcanic exhalations (Kamchatka, Kuril-islands) j) Carbonatites and their crust of weathering (Tomtor in Jakutia)