A5021399383- Geological and Geochemical Analysis
- High-pressure geophysics and materials
- Geochemistry and Geologic Mapping
- earthquake and tectonic studies
- Electron and X-Ray Spectroscopy Techniques
- X-ray Spectroscopy and Fluorescence Analysis
- Mineralogy and Gemology Studies
- Advanced Materials Characterization Techniques
- Crystal Structures and Properties
- Geochemistry and Elemental Analysis
- Ion-surface interactions and analysis
- Analytical chemistry methods development
- X-ray Diffraction in Crystallography
- Clay minerals and soil interactions
- Iron oxide chemistry and applications
- Methane Hydrates and Related Phenomena
- High-Temperature Coating Behaviors
- Nanoparticles: synthesis and applications
- Nuclear Physics and Applications
- Metal Extraction and Bioleaching
- Geochemistry and Geochronology of Asian Mineral Deposits
- Advanced X-ray and CT Imaging
- Advanced Electron Microscopy Techniques and Applications
- Glass properties and applications
- Crystallization and Solubility Studies
V.S. Sobolev Institute of Geology and Mineralogy
2016-2025
Russian Academy of Sciences
1979-2014
Institute of the Earth’s Crust
2000-2010
Siberian Branch of the Russian Academy of Sciences
2000
The paper contains the study results of a large copper nugget from Taymet deposit (Gornaya Shoria, Russia). is situated in Southern Siberia poorly bare terrain and located among basalts, trachybasalts pyroclastic deposits Lower Cambrian Ust-Anzas Formation, which porous fragmented areas are widespread. kept Central Siberian Geological Museum (Institute Geology Mineralogy SB RAS, Novosibirsk, museum № I-2/30). With weight about 700 kg, its maximum dimensions 0.25×0.65×1.4 m. composition two...
The Paleoproterozoic Kovdozero complex, one of largest in the Fennoscandian Shield, was emplaced a peripheral region SB–TB–LBB (Serpentinite Belt–Tulppio Belt–Lapland–Belomorian Belt) megastructure. Coronitic rocks ultrabasic–basic compositions, investigated along cross-section Gabrish area, are members cryptically layered series. They crystallized from northern margin inward, as indicated by variations mineral compositions and geochemical trends. Unsteady conditions crystallization arose...
The lopolithic Pados-Tundra layered complex, the largest member of Serpentinite belt–Tulppio belt (SB–TB) megastructure in Fennoscandian Shield, is characterized by (1) highly magnesian compositions comagmatic dunite–harzburgite–orthopyroxenite, with primitive levels high-field-strength elements; (2) maximum values Mg# olivine (Ol, 93.3) and chromian spinel (Chr, 57.0) Dunite block (DB), which exceed those Ol (91.7) Chr (42.5) sills at Chapesvara, (3) presence major contact-style...
Dunite–harzburgite–olivine-bearing orthopyroxenite successions in the subvolcanic Chapesvara-I and Chapesvara-II intrusions Serpentinite Belt, western Kola Peninsula, are notably magnesian. The mean Mg# value (whole-rock) is 86.6, olivine Fo84−89. upper contact facies (UCF) displays a lower (81.6). It consists of grains Fo92 abundant chromian spinel, implying rapid crystallization an almost unfractionated melt. On average, whole-rock Al2O3/TiO2 22.45, close to 22.9 primitive mantle, ~22....
The purpose of this study is to show the patterns distribution disseminated sulfide in layered rocks based on numerous geochemical and mineralogical data obtained for eight boreholes Norilsk intrusion (southern part 1 deposit). There a common trend liquid fractionation Main Ore Horizon, which composed picritic taxite (or olivine) gabbro-dolerites: Ni/Cu both rock types decreases down all sections, indicating an increase degree from top bottom. On contrary, Ni/Fe ratios pentlandite direction...
The Paleoproterozoic Lyavaraka ultrabasic complex is one of several dunite–harzburgite–orthopyroxenite bodies exposed as shallow plutonic complexes in the Serpentinite Belt, Kola Peninsula, Russia. and other are anorogenic, formed a stable within-plate environment interval 2.5–2.4 Ga members large igneous province Sumian cycle activity. This geotectonic setting accounts for emplacement strongly magnesian komatiitic magma Fennoscandian Shield. We recognize three stages crystallization...
For the first time, corona-type textures are described in ultrabasic rocks three complexes of Serpentinite Belt on Kola Peninsula northeastern Fennoscandian Shield. Three variants corona texture formed at different stages during crystallization a komatiitic, Al-undepleted melt emplaced subvolcanic setting. The type crystallized an early stage (Mg# Ol = 87) fine-grained harzburgite Chapesvara-I sill, with following order corona: → Opx Cpx Pl Amp (aluminous sodic-calcic). second displays...
Abstract Two generations of hypermagnesian clinopyroxene [92 < Mg# 98] are found in the Yanisvaara ultrabasic complex northwestern Lapland–Belomorian Belt, Kola Peninsula, Russia. Grains a first generation (Wo47.3–50.7En46.5–49.4Fs2.5–3.5), 0.2–0.4 mm across, attributed to reaction which tremolite + replaced orthopyroxene. The second generally attains even more strongly magnesian compositions (Wo46.5–50.9En47.5–50.8Fs1.0–3.2). It is sporadically developed as submicrometric rim- or...
ABSTRACT The maximum value of Mg# [= 100Mg/(Mg + Fe2+ Mn)] in chromium-bearing spinel-group minerals (Chr) the Ultrabasic Core Zone (UCZ) Lyavaraka orthopyroxenite – harzburgite dunite complex Serpentinite Belt Kola Peninsula is 54.5–67.5. Such highly magnesian compositions spinel are associated with notable enrichments ferric iron (Fe3+# 58–63). There two generations accessory Chr UCZ unit. first generation occurs as inclusions olivine that not unusually (Mg# 90.3), and second closely...
Evaluation of the error computations using analysis results requires knowing determining analyte. The necessity limiting conditions value permissible concentration: it should not exceed a certain predetermined limit. In particular, such requirement is made for component by content which temperature rock formation calculated in mineral. This study demonstrates derivation formula quantitation limit C lim an Relations have been obtained connecting , detection min and relative standard deviation...