Tourmaline from the Solnechnoe tin deposit, Khabarovsk Krai, Russia

2019 ◽  
Vol 84 (2) ◽  
pp. 245-265
Author(s):  
Ivan A. Baksheev ◽  
Marina F. Vigasina ◽  
Vasily O. Yapaskurt ◽  
Igor A. Bryzgalov ◽  
Nina V. Gorelikova

AbstractTourmaline from the Solnechnoe hydrothermal granitoid-related tin deposit in the Khabarovsk Krai, Russian Far East has been studied with electron microprobe, infrared and Mössbauer spectroscopy. Tourmaline formed in three distinct stages with different types of chemical substitution. Tourmaline from the first unmineralised stage is classified as dravite or schorl, which could be enriched locally in Ca, the X-site vacancy and F. This tourmaline is characterised by the Fe ↔ Mg and X vacancy + Al ↔ Na + Fe substitutions. The second, molybdenum-stage tourmaline, is schorl–dravite and fluor-schorl–fluor-dravite enriched in Ca, and a few compositions belong to the calcic group. The predominant substitution is Ca + Mg ↔ Na + Al. The third, tin-stage tourmaline, is classified as schorl–dravite with some tourmalines being fluor-schorl, oxy-schorl, foitite and magnesio-foitite. The tin-stage tourmaline is characterised by the substitutions Fe2+ ↔ Mg, Altot + O2– ↔ Fe2+ + OH–, and Fe3+ ↔ Altot. An increase of the Fe3+/Fetot value from 3–9% in the molybdenum stage to 12–16% in the tin-stage tourmalines indicates an increase in oxidation potential, which possibly contributed to cassiterite deposition. Comparison of tourmalines from greisen, porphyry and intrusion-related tin deposits worldwide shows they differ in primary chemical substitutions so can be characterised by this mechanism. The Fe3+/Fetot value in tourmaline also appears to be one of the indications for the tin deposit type. The Fe3+/Fetot value increases from <10% in greisen tourmaline through 15% in tourmaline from intrusion-related deposits to 20% in tourmaline from porphyry deposits.

Minerals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1166
Author(s):  
Leonid A. Neymark ◽  
Anatoly M. Larin ◽  
Richard J. Moscati

This paper investigates applicability of cassiterite to dating ore deposits in a wide age range. We report in situ LA-ICPMS U-Pb and Pb-Pb dating results (n = 15) of cassiterite from six ore deposits in Russia ranging in age from ~1.85 Ga to 93 Ma. The two oldest deposits dated at ~1.83–1.86 Ga are rare metal Vishnyakovskoe located in the East Sayan pegmatite belt and tin deposits within the Tuyukan ore region in the Baikal folded region. Rare metal skarn deposits of Pitkäranta ore field in the Ladoga region, Fennoscandian Shield are dated at ~1.54 Ga. Cassiterite from the Mokhovoe porphyry tin deposit located in western Transbaikalia is 810 ± 20 Ma. The youngest cassiterite was dated from the deposits Valkumei (Russian North East, 108 ± 2 Ma) and Merek (Russian Far East, 93 ± 2 Ma). Three methods of age calculations, including 208Pb/206Pb-207Pb/206Pb inverse isochron age, Tera-Wasserburg Concordia lower intercept age, and 207Pb-corrected 206Pb*/238U age were used and the comparison of the results is discussed. In all cases, the dated cassiterite from the ore deposits agreed, within error, with the established period of magmatism of the associated granitic rock.


2021 ◽  
Vol 20 (3) ◽  
pp. 495-528
Author(s):  
Vilena A. YAKIMOVA ◽  
Sergei V. KHMURA

Subject. We investigate the functions of priority development areas created in the subjects of the Russian Far East. Objectives. The study aims to determine the functional purpose of such areas and assess how they fulfill their socio-economic functions. Methods. We employ methods of generalization, systematization, sampling and grouping of socio-economic indicators of organizations and sole proprietors that have been granted the status of residents of priority development areas, methods of statistical, economic, correlation, and regression analysis. Results. The analysis shows that the regions of the Russian Far East have been intensively developing over the recent years. This leads to changes in the volume of investment, GRP and its structure, fixed assets, and created jobs. The paper identifies the main functions of priority development areas and includes findings on their implementation. Conclusions. At the initial stage of advanced development regime, there have been positive trends associated with a growth in investment inflows (Amur Oblast, Primorsky Krai), increased labor resources and employment expansion (Primorsky Krai, Republic of Sakha (Yakutia), export orientation of projects (Amur Oblast, Khabarovsk Krai), production ramp-up in manufacturing (Primorsky and Khabarovsk Krai, Amur Oblast), modernization and renewal of fixed assets (Sakhalin Oblast, Republic of Sakha (Yakutia).


2021 ◽  
Vol 49 ◽  
pp. 64-78
Author(s):  
Andrei A. Legalov ◽  
Vladimir V. Dubatolov

Currently, 128 species of Curculionid beetles (Anthribidae – 3, Rhynchitidae – 11, Attelabidae – 11, Brentidae – 7 and Curculionidae – 92 and Scolytidae – 4) are first found in the Bolshekhekhtsirsky Nature Reserve. In total, 104 species are first found in the reserve for the first time. There are the first record of 25 species, Thompsonirhinus (Maculinvoles) mandschuricus (Voss, 1939), Protapion apricans (Herbst, 1797), Protapion fulvipes fulvipes (Foureroy, 1785), Oxystoma cerdo (Gerstaecker, 1854), Trichapion simile (Kirby, 1811), Stenopterapion (Stenopterapion) meliloti (Kirby, 1808), Eutrichapion (Eutrichapion) viciae (Paykull, 1798), Dorytomus nordenskioldi Faust, 1882, Dorytomus suvorovi Reitter, 1911, Cossonus (Caenocossonus) tibialis Folwaczny, 1964, Rhinoncomimus (Homorosomulus) latipes Korotyaev, 1997, Zacladus (Amurocladus) asperulus (Faust, 1893), Ceutorhynchus albosuturalis (Roelofs, 1875), C. nitidulus Faust, 1887, Glocianus punctiger (C.R. Sahlberg, 1835), Nedyus quadrimaculatus (Linnaeus, 1758), Tachyerges pseudostigma (Tempere, 1982), Rhinusa (Rhinusa) brisouti (Faust, 1891), Cleopomiarus mandschuricus (Voss, 1952), Tychius (Tychius) albolineatus Motschulsky, 1860, Otiorhynchus (Pendragon) ovatus (Linnaeus, 1758), Phyllolytus variabilis (Roelofs, 1873), Polydrusus (Eustolus) corruscus Germar, 1824, Pseudocneorhinus longisetosus Morimoto, 2015, and Hylesinus eos Spessivtsev, 1919 for Khabarovsk Krai and Curculio inornatus Kwon et Lee, 1990 for the Russian fauna.


2020 ◽  
Vol 6 ◽  
pp. 437-549
Author(s):  
Andrei A. Legalov

Abstract Currently, 1464 species of Curculionid beetles (Nemonychydae – 1, Anthribidae – 76, Rhynchitidae – 78, Attelabidae – 28, Brentidae – 131 and Curculionidae – 1150) are recorded from Siberia and the Russian Far East. Forty species are found in Yamalo-Nenets Autonomous Okrug, 84 species in Khanty-Mansi Autonomous Okrug, 313 species in Tyumen Oblast, 182 species in Chelyabinsk Oblast, 129 species in Kurgan Oblast, 172 species in Omsk Oblast, 299 species in Tomsk Oblast, 439 species in Novosibirsk Oblast, 324 species in Kemerovo Oblast, 356 species in Altay Krai, 296 species in Altai Republic, 182 species in Krasnoyarsk Krai, 114 species in Republic of Khakassia, 244 species in Tyva Republic, 283 species in Irkutsk Oblast, 239 species in Buryatiya Republic, 286 species in Zabaikalskii Krai, 153 species in Sakha (Yakutia) Republic, 74 species in Far East: Kamchatka Oblast, 43 species in Chukotka Autonomous Okrug, 105 species in Magadan Oblast, 325 species in Amur Oblast, 312 species in Khabarovsk Krai, 599 species in Primorsky Krai, 225 species in Sakhalin Is. and 218 species in Kuriles Isl. 112 species are excluded from the fauna of Siberia and the Russian Far East. New synonyms, Trichosmobodes L. Arnoldi, 1975, syn. nov. to Holomrasus Reitter, 1912, Notaris illibata Faust, 1882, syn. nov. to N. acridulus (Linnaeus, 1758), Larinus ruber Motschulsky, 1845, syn. nov. to L. impressus Gebler, 1829, Lixus maculatus Roelofs, 1873, syn. nov. to L. fasciculatus Boheman, 1835, Stephanocleonus jakovlevi Faust, 1893, syn. nov. and S. jenisseicus Ter-Minassian, 1978, syn. nov. to S. leucopterus (Fischer von Waldheim, 1823), Curculio budjumkanensis Legalov, 2007, syn. nov. to C. betulae (Stephens, 1831), Curculio parasiticus Morimoto, 1962, syn. nov. to Archarius salicivorus (Paykull, 1792), Otiorhynchus buchtarmensis Bajtenov, 1977, syn. nov. and O. rhododendroni Bajtenov, 1977, syn. nov. to O. grandineus Germar, 1823, O. perplexus Gyllenhal, 1834, syn. nov. to O. obscurus Gyllenhal, 1834, Tanymecus argentatus Gyllenhal, 1840, syn. nov. to Megamecus bidentatus (Gebler, 1829), comb. nov. are established.


2010 ◽  
Vol 57 (6) ◽  
pp. 777-802 ◽  
Author(s):  
V. G. Gonevchuk ◽  
G. A. Gonevchuk ◽  
P. G. Korostelev ◽  
B. I. Semenyak ◽  
R. Seltmann

For the first time, a comparative analysis of the tachinid fauna of the Phasiinae subfamily of the Russian Far East with the fauna of neighboring regions has been presented. The Phasiinae fauna of the Primorsky Krai (Far East of Russia) is characterized as peculiar but closest to the fauna of the southern part of Khabarovsk Krai, Amur Oblast and Eastern Siberia. The following groups of regions have been identified: Southern, Western and Eastern Siberia; Amur Oblast and Primorsky Krai, which share many common Holarctic and Transpalaearctic species.Special mention should be made of the fauna of the Khabarovsk Krai, Sakhalin Oblast, which are characterized by poor species composition and Japan (having a subtropical appearance).


2020 ◽  
Vol 13 (1) ◽  
pp. 92-98
Author(s):  
Elena A. Grigorieva ◽  
Anna B. Sukhoveeva

Medical and social environment is discussed for the southern part of the Russian Far East, in system “Quality of life and reproductive health” at different hierarchical levels; that are at the meso-level – Khabarovsk Krai and the Jewish Autonomous Region (JAR); at the micro-level – Smidovichsky District in JAR and Nanai District in Khabarovsk Krai; at the local level – municipal settlements in urban and rural areas. The aim of the research is to identify the features of the social and medical environment affecting the quality of life, with an emphasis on the health of indigenous and non-indigenous population of reproductive age as the main criterion of quality of life. For subjective estimation of their health, well-being and quality of life, sociological surveys of women of reproductive age and pregnant women was conducted using a special questionnaire “Medical and social passport of future parents”. The region is characterized by low indicators of health and reproduction of the population, weak social infrastructure. The analysis of the quality of life in the region requires the establishment of priority groups of risk factors to improve the efficiency of medical and social control to minimize their impact.


2020 ◽  
Vol 209 ◽  
pp. 05012
Author(s):  
Svetlana Naiden ◽  
Olga Dyomina

The paper examines the specifics of organization of the electricity and heat energy markets depending on the population behavior in the Far East. The region maintains a regular monopoly, where vertically integrated companies provide services while keeping surplus supply; consumer has no ability to influence the demand in the conditions of imposed prices. The paper estimated the price elasticity of demand on electricity for the population of Khabarovsk Krai, which confirmed the low degree of dependency of consumption from either income or the scale of the tariff. Furthermore, the paper estimated the potential growth of population expenses on electricity in two scenarios: 1) keeping energy tariffs on inflation level and 2) keeping current average annual growth rates of tariffs. There is a differentiation of availability of services depending on the level of income. There is also a need for social support of population from budgets depending on the growth rates of tariffs on electricity and heat energy.


Zootaxa ◽  
2020 ◽  
Vol 4750 (4) ◽  
pp. 585-590
Author(s):  
EVGENY S. KOSHKIN ◽  
OLEG PEKARSKY

Victrix svetlanae sp. n. is described from Russian Far East, Khabarovsk Krai. The new species belongs to the subgenus Poliobrya Hampson, 1908. New species is most similar to V. umovii (Eversmann, 1846) and V. patula (Püngeler, 1907) but differs in both external and genital characteristics. This is the first record of the genus Victrix in the Far East. 


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