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A. S. Vakh O. V. Avchenko N. A. Goryachev V. I. Gvozdev A. A. Karabtsov 《Doklady Earth Sciences》2016,467(2):402-407
New data on the composition of jordanite–geocronite Pb–Sb–As sulfosalts in the vein–disseminated gold ore at the Berezitovoe deposit were provided. Within the studied quartz–sulfide sample, some grains of Pb–Sb–As sulfosalts, uniform in composition and azonal, are drastically different from each other in As and Sb contents forming a quasi-continuous range of solid compounds from jordanite to geocronite. Jordanite–geocronite minerals at the Berezitovoe deposit (relative to the Darasun deposit) are characterized by a higher Pb concentration with a low polymetal total. It is assumed that such typomorphic features of the composition of Pb–Sb–As sulfosalts are indicative of specific formation conditions of gold mineralization in polymetallic ores at the Berezitovoe deposit. 相似文献
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The supposedly second finding of rare arsenosilicate cervandonite-(Ce) in the world is characterized. The mineral was recognized
in the ore-bearing metasomatic rocks of the Berezitovoe gold-base metal deposit (Upper Priamurye, Russian Far East) in association
with quartz, biotite, muscovite, orthoclase, garnet (almandine-spessartine), tourmaline, basic plagioclase, and sulfides.
The cervandonite is represented by optically homogeneous and heterogeneous aggregates with visible crystals from 10 fum to
0.1–0.3 mm in size. Based on the microprobe analysis, the average chemical composition of the homogeneous cervandonite-(Ce)
aggregates is as follows (wt %): Ce2O3 - 13.00, La2O3 - 5.70, Nd2O3 - 5.20, Pr2O3 - 1.41, Y2O3 - 0.77, Sm2O3 - 0.77, Eu2O3 - 0.23, Gd2O3 - 0.54, Dy2O3 - 0.31, ThO2 - 1.12, UO2 - 0.30, TiO2 - 12.86, Al2O3 - 9.24, Fe2O3 - 8.93, FeO - 2.68, CaO - 0.14, SiO2 - 19.98, As2O3 - 16.19. The comparative study of the cervandonite-(Ce) from the Berezitovoe deposit and the analogous minerals from the
Alpine mica gneiss of Mt. Pizzo Cervandone (Central Alps) showed that the former mineral can be assigned to a new variety
of cervandonite-(Ce) in terms of its compositional features. This variety is characterized by an ordered stoichiometric composition
corresponding to the simpler theoretical formula (Ce,Nd,La)(Fe3+, Fe2+, Ti4+, Al)3 (Si2As3+)3O12. 相似文献
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V. I. Gvozdev N. A. Goryachev A. S. Vakh D. G. Fedoseev B. I. Semenyak 《Russian Journal of Pacific Geology》2013,7(6):403-415
A collection of quartz veinlets with ore mineralization sampled from the dumps of the abandoned pit of the Kirov mine was analyzed with defining the mineral assemblages productive for gold mineralization and determining the composition of the main ore minerals and their typomorphic features, which are used for interpreting the genesis of the mineral associations and the deposit as a whole. 相似文献
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Panichev A. M. Baranovskaya N. V. Chekryzhov I. Ju. Seryodkin I. V. Vakh E. A. Belyanovskaya A. 《Doklady Earth Sciences》2021,499(1):599-603
Doklady Earth Sciences - Extensive geological and hydrobiogeochemical studies were conducted for the first time in two Sikhote-Alin (Primorskii krai) areas, where geophagy among wild ungulates has... 相似文献
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A. S. Vakh O. V. Avchenko N. A. Goryachev V. I. Gvozdev V. I. Kiselev V. G. Khomich Yanchen Yang Songqing Ye Guobin Zhang 《Doklady Earth Sciences》2013,450(2):575-582
New data on the isotopic age of zircons from metamorphic and igneous rocks are given for the Berezitovoe and Kirovskoe deposits located in the eastern margin of the Selenga-Stanovoi orogenic belt. The zircons were studied with the LA-ICP-MS method in the State Key Laboratory of Continental Dynamics, Northwestern University, Sian, Shansi province, People’s Republic of China. The results allowed us to reveal three age epochs in formation of the eastern part of the Selenga-Stanovoi orogenic belt (1.87 Ga; 380–330 Ma; 138–125 Ma), which have significant importance for understanding of the geological structure of the south-eastern framework of the North Asian craton. 相似文献
8.
A. S. Vakh O. V. Avchenko N. A. Goryachev V. I. Gvozdev A. A. Karabtsev E. A. Vakh 《Geology of Ore Deposits》2017,59(8):738-744
New data are presented on segregations and compositions of bournonite-seligmannite series of minerals in gold-bearing veinlets of the Beresitovoe deposit located in the eastern part of the Mongolia–Okhotsk Orogenic Belt. It was established that these minerals represent a discrete series of stoichiometric solid compounds with As formula coefficients varying from 0.2 to 1.2. It is shown that minerals of this series are characteristic of ore deposits that undergo high-grade metamorphism, the P–T conditions of which are sufficient for melting of primary sulfides. 相似文献
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N. A. Kharitonova E. A. Vakh G. A. Chelnokov O. V. Chudaev I. A. Aleksandrov I. V. Bragin 《Russian Journal of Pacific Geology》2016,10(2):141-154
Analysis of the distribution and fractionation of rare earth elements in the groundwater of the Sikhote Alin fold region reveals that their concentrations, geochemistry, and fractionation ability vary in different groundwater types depending on many factors, including the pH–Eh parameters and mineralization of the solutions and the composition of the host rocks. The results of monitoring of changes in the REE concentrations in the groundwater of the region over ten years provides the opportunity to establish the range of their variations. Inorganic forms of REE migration are rated for all geochemical types of water in the meteoric–surface–ground water system. 相似文献