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Sokerina N. V. Zykin N. N. Shanina S. N. Valyaeva O. V. Isaenko S. I. Sokerin M. Yu. 《Doklady Earth Sciences》2019,484(1):58-60
Doklady Earth Sciences - One- (gas) and two-phase (aqueous solution plus gas) inclusions are studied in calcite taken from the Cheremshan horizon of the Bashkirian stage at a depth of... 相似文献
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The existence of a new type of natural lonsdaleite confined to regionally metamorphosed and metasomatically modified rocks
is verified based on complex data obtained by high resolution microscopy and spectroscopy. The structural and spectroscopic
characteristics of isolated lonsdaleite particles that have a relatively large size and monocrystalline structure are given
for the first time. The results of these studies can be used not only for simulating the processes of natural diamond formation,
but also for designing superhard materials with allowance for the fact that lonsdaleite is the hardest material on Earth. 相似文献
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Shaibekov R. I. Gaikovich M. M. Isaenko S. I. Shevchuk S. S. 《Doklady Earth Sciences》2017,477(1):1363-1367
Doklady Earth Sciences - This work presents the results of studying the mineral composition of chromite ores of the Khoila area. For the first time, nickel antimonide (breithauptite), including an... 相似文献
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N. V. Berdnikov T. G. Shumilova S. A. Pyachin M. A. Pugachevsky A. A. Cherepanov S. I. Isaenko N. F. Karpovich V. S. Komarova 《Russian Journal of Pacific Geology》2014,8(4):268-275
Carbonaceous matter (CM) in shales of some deposits and occurrences of the Russian Far East has been studied by scanning and transmission electron microscopy, Raman spectroscopy, and X-ray phase and differential thermal analyses. It was shown that the carbonaceous matter in the high-temperature shales (amphibolite facies) of the Soyuznoe deposit is represented by holocrystalline graphite, while the low-temperature (greenschist facies) shales of the Sutyr and Kimkan sequences contain mainly nanocrystalline graphite. It was substantiated for natural objects that platinum is assimilated by graphite at high temperatures. This should be taken into account in planning the prospecting works, as well as in developing a technique for enrichment of carbonaceous ore, because high-temperature carbonaceous shales with holocrystalline graphite are promising for Pt, unlike their low-temperature analogues with nanocrystalline graphite. 相似文献
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T. G. Shumilova S. I. Isaenko B. A. Makeev A. A. Zubov S. N. Shanina Ye. M. Tropnikov A. M. Askhabov 《Doklady Earth Sciences》2018,480(1):595-598
Liquation structures were described in ultrahigh-pressure impact glasses of the Kara astrobleme (Pay-Khoy) with differentiation into the bisilica, aluminosilicate, and ore components for the first time. The sequence of differentiation of mineral phases upon solidification of an ultrahigh-pressure impact melt was established: coesite, silicate glass, augite, aluminosilicate glass of albite composition, and pyrite. The discovered impact glasses are highly resistant to postimpact alterations. 相似文献
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L. A. Ivanova T. G. Shumilova V. Ya. Medvedev M. V. Marchuk S. I. Isaenko S. S. Shevchuk 《Doklady Earth Sciences》2016,466(2):196-198
Integrated data are presented on structure–morphology features, as well as on the material and phase composition, of a fluid-produced carbonaceous substance (CS) formed under known thermodynamic conditions of the experiment (C–O–H system, 500–800°C, and 500–1000 atm). Solid products of the synthesis were examined by means of X-ray phase and thermal analyses, scanning electron microscopy combined with microprobe analysis, transmission electron microscopy, high-resolution Raman spectroscopy, IR spectroscopy, and CHN-analysis. The characteristics of the experimental CS may be applicable in genetic modeling of natural ore-bearing fluidal carbonaceous systems. 相似文献