A5008436587- Geological and Geochemical Analysis
- High-pressure geophysics and materials
- Hydrocarbon exploration and reservoir analysis
- Geochemistry and Geologic Mapping
- earthquake and tectonic studies
- Diamond and Carbon-based Materials Research
- Methane Hydrates and Related Phenomena
- Mineralogy and Gemology Studies
- Crystal Structures and Properties
- Geological Studies and Exploration
- Radioactive element chemistry and processing
- Geomagnetism and Paleomagnetism Studies
- Zeolite Catalysis and Synthesis
- Metal Extraction and Bioleaching
- Atmospheric and Environmental Gas Dynamics
- Chemical Thermodynamics and Molecular Structure
- Analytical chemistry methods development
- Chemical Synthesis and Characterization
- CO2 Sequestration and Geologic Interactions
- Geology and Paleoclimatology Research
- Thermal and Kinetic Analysis
- Advanced materials and composites
- Advanced Materials Characterization Techniques
- Minerals Flotation and Separation Techniques
- Advanced Chemical Physics Studies
V.S. Sobolev Institute of Geology and Mineralogy
2015-2025
Russian Academy of Sciences
2002-2014
Institute of Mineralogy
2005-2006
Abstract Diamonds grown by high pressure temperature process (HPHT) are usually characterized yellow color and contents of nitrogen. Introduction Ti decreases nitrogen content in diamond. Understanding the formation nitrogen-poor diamond is very important not for progress HPHT only, but because these varieties represent rare natural stones, although their crystallization conditions have been clarified yet. Here we studied composition fluid phase synthetic diamonds. The experiments were...
The Konduyak gold–quartz–sulfide deposit is one of the most promising gold mines in Ayakhta ore cluster on Yenisei ridge. This article devoted to study composition volatile compounds ore-forming fluid, since this key aspects understanding conditions formation. compositions fluids that formed quartz and pyrite zone were determined using Raman spectroscopy pyrolysis-free gas chromatography–mass spectrometry. fluid inclusions minerals showed complex C-H-O-S-N multi-component quartz–sulfide...
Relevance. The need to establish the parameters of ore-bearing fluids Ayakhta gold deposit, one standard and large objects in Yenisei Ridge. data obtained can be used develop a holistic model mineralization region. Aim. To determine physicochemical conditions for formation quartz vein zones source. Methods. We analyzed ore minerals composition by micro-X-ray spectral analysis, determined temperatures phase transitions fluid inclusions using microthermometry method, individual Raman...
Volatile components in diamonds, associated garnet (pyrope), and olivine from two extremely rare xenoliths of diamondiferous peridotites recovered the Udachnaya kimberlite pipe Yakutia, Russia, were analyzed by gas chromatography–mass spectrometry (GC–MS) using a Focus DSQ II Series Single Quadrupole GC–MS (Thermo Scientific, USA). These are pyrope lherzolite dunite based upon compositions coexisting minerals. Unlike lherzolite, which contained with moderate calcium (Ca)-component content...
Deep carbon and nitrogen cycles played a critical role in the evolution of Earth. Here we report on successful studying speciation C-O-H-N systems with low contents at 6.3 GPa 1100 to 1400 °C. At fO2 near Fe-FeO (IW) equilibrium, synthesised fluids contain more than thirty species. Among them, CH4, C2H6, C3H8 C4H10 are main All species, except for C1-C4 alkanes alcohols, occur negligible amounts generated H2O, but С15-С18 slightly higher oxygenated hydrocarbons diverse temperatures H2O...
The high‐pressure behaviour of cordierite, a widespread ring aluminosilicate with channels incorporating fluid compounds (H 2 O, CO ), is characterized by the absence phase transitions up to 2.5 GPa. However, distortion tetrahedra observed previously at 2.3 GPa supposed introduce transition higher pressure, which has not been checked so far. This work presents Raman spectroscopic study natural cordierite compressed in water medium 4.7 diamond anvil cell. At P > 4 GPa, disordering both...