A5013737130- Geological and Geochemical Analysis
- Planetary Science and Exploration
- X-ray Diffraction in Crystallography
- Astro and Planetary Science
- Crystal Structures and Properties
- High-pressure geophysics and materials
- Geology and Paleoclimatology Research
- Mineralogy and Gemology Studies
- Geochemistry and Elemental Analysis
- Nuclear materials and radiation effects
- Advanced ceramic materials synthesis
- Radioactive element chemistry and processing
- Geochemistry and Geologic Mapping
- Clay minerals and soil interactions
- Ferroelectric and Piezoelectric Materials
- Geological Formations and Processes Exploration
- Paleontology and Stratigraphy of Fossils
- Archaeology and ancient environmental studies
- Nuclear Physics and Applications
- Space Exploration and Technology
- Glass properties and applications
- Building materials and conservation
- Crystallography and molecular interactions
- Geomagnetism and Paleomagnetism Studies
- Metal Extraction and Bioleaching
Czech Academy of Sciences
2015-2024
Czech Academy of Sciences, Institute of Geology
2015-2024
Charles University
2008-2023
Mineral Resources
2019
Institute of Geochemistry
2019
Institute of Mineralogy
2019
Jagiellonian University
2009
University of Skikda
2009
Curtin University
1993-2008
University of Bayreuth
2005
The collection of representative modal mineralogy data as well textural and chemical information on statistically significant samples is becoming essential in many areas Earth material sciences.Automated Scanning Electron Microscopy (ASEM) systems provide an ideal solution for such tasks.This paper presents the methods techniques used recently developed TESCAN Integrated Mineral Analyzer (TIMA-X) with Version 1.5 TIMA software.The benefits from use a fully integrated quantitative...
Nano zero-valent iron (nZVI) has great potential in the remediation of metal(loid)-contaminated soils, but its efficiency metal(loid) stabilization plant-microbe continuum is unclear. This study investigated nZVI-mediated behavior arbuscular mycorrhizal (AM) fungal-maize ( Zea mays L.) plant association. Plants with AM fungal inoculation were grown metal(loid)- (mainly Zn and Pb) contaminated soils (Litavka River, Czech Republic) amended with/without 0.5% (w/w) nZVI. The results showed that...
The forensic field has until now been missing more versatile equipment for non-destructive characterization, analysis and inspection of 2D 3D objects. Also, the need increasingly frequent art forgeries, where is required at least in first step, calling a multimodal solution. A prototype device robotic analysis, imaging mapping objects being developed tested to be used these areas. system based on principle integrating analytical technologies onto six-axis arms, which allow substantial...
Abstract A limestone cave filled with montmorillonite clay was found in a hill above the karst plateau on north‐eastern edge of Adriatic Sea. The fill shows no correlation sediments surrounding caves or other known Classical Karst, where content is negligible. In caves, primary deposited originate from weathered Eocene flysch and were transported into by sinking streams. Powder X‐ray diffraction analyses indicate pure composition few coarser quartz grains heavy minerals. Based these results...
This study is among the first to reveal nZVI aging in soil ecosystem and its interactions with microbial community.
Abstract X‐ray microtomography (XMT), diffraction (XRD), and magnetic hysteresis measurements were used to determine micrometeorite internal structure, mineralogy, crystallography, physical properties at μm resolution. The study samples include unmelted, partially melted (scoriaceous), completely (cosmic spherules) micrometeorites. This variety not only allows comparison of the mineralogy porosity these three types but also reveals changes in meteoroid during atmospheric entry various...
The crystal structure of troilite from chondrites Etter and Georgetown a analog synthesized by sulfurization an iron wire was refined using single-crystal X-ray data. Troilite is known to be hexagonal, with space group P62c, which non-centrosymmetric, allowing two non-identical inversely related spatial arrangements atoms within the unit cell. All three samples represent so-called inversion twins. They contain both atomic orientations instead single arrangement. twinning may have developed...
Abstract Moldavites are tektites genetically related to the Ries impact structure, located in Central Europe, but source materials and processes chemical fractionation of moldavites not fully constrained. To further understand moldavite genesis, Cu Zn abundances isotope compositions were measured a suite from four different substrewn fields (South Bohemia, Moravia, Cheb Basin, Lusatia) chemically diverse sediments surroundings structure. slightly depleted (~10–20%) distinctly (>90%)...
Abstract Chemical fingerprints of impacts are usually compromised by extreme conditions in the impact plume, and contribution projectile matter to impactites does not often exceed a fraction per cent. Here we use chromium oxygen isotopes identify impactor impact-plume processes for Zhamanshin astrobleme, Kazakhstan. ε 54 Cr values up 1.54 irghizites, part fallback ejecta, represent Cr-rich extremity Solar System range suggest CI-like chondrite impactor. Δ 17 O as low −0.22‰ however,...
Parascorodite, a new mineral from Kan ˇk near Kutná Hora, Central Bohemia, Czech Republic, forms earthy white to white-yellow aggregates associated with scorodite, pitticite, bukovsky ´ite, kan ˇkite, zy ´kaite, gypsum, and jarosite, wet chemical analysis gave (in wt%): As 2 O 5 44.45,P 0.84, SO 3 1.53,Fe 34.55,Al 0.17, H 17.81, totaling 99.95.The simplified formula is FeAsO 4 •2H O. Selected area electron diffraction suggests hexagonal or trigonal symmetry.The extinction symbol P-c-.Powder...