de Haas-van Alphen study on three-dimensional topological semimetal pyrite PtBi2 [PDF]
arXiv, 2018 We present the systematic de Haas-van Alphen (dHvA) quantum oscillations studies on the recently discovered topological Dirac semimetal pyrite PtBi2 single crystals. Remarkable dHvA oscillations were observed at field as low as 1.5 T. From the analyses of dHvA oscillations, we have extracted high quantum mobility, light effective mass and phase shift ...
arxiv
Minor elements in pyrite and their effects on the cube-edge of pyrite
The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 1963 Investigations concerning the concentration of minor elements (Co, Ni, Mn, As) in pyrites and cube-edge measurements were carried out on thirty-nine specimens taken from the Chichibu mine (26 samples), the Taishu mine (7 samples), and the Ashio mine (6 samples), by using X-ray fluorescent method as well as X-ray diffraction method. The results obtained
Kiyoshi Takimoto +2 more
openaire +2 more sources
Desulphurization of coals of different ranks in the presence of slimes by reverse flotation
Energy Reports, 2019 In this paper, the flotation separation of pyrite from sub-bituminous and meta-bituminous coals in the presence of slimes was investigated. The sub-bituminous coal and the meta-bituminous coal have significant differences in their surface properties ...
You Zhou +5 more
doaj
Advances in Materials Science and Engineering, 2016 Arsenic is one of the materials that has a worldwide concern because of its high toxicity and chronic effects on human health. The existence of arsenic as As (III) is about 56 times poisonous as As (V) and more difficult to process.
Guobao Chen, Zhangfu Zhu, Yong Qin
doaj +1 more source
Thermoelectric properties of marcasite and pyrite FeX$_2$(X=Se,Te): A first principle study [PDF]
RSC Advances, 4, 9424 (2014), 2014 Electronic structure and thermoelectric properties of marcasite (m) and synthetic pyrite (p) phases of FeX$_2$ (X=Se,Te) have been investigated using first principles density functional theory and Boltzmann transport equation. The plane wave pseudopotential approximation was used to study the structural properties and full-potential linear augmented ...
arxiv
Stromatolitic Mounds in Tidal-Facies Sandstones of the Paleoarchean Moodies Group (Barberton Greenstone Belt, Eswatini). [PDF]
GeobiologyABSTRACT Shallow‐marine environments are thought to have been pivotal to the spreading, perhaps even the origin, of early life on Earth. The shallow‐marine Archean sedimentary record of early life, however, is biased towards carbonates; nearshore siliciclastic environments have not received proportional attention.
Reimann S +6 more
europepmc +2 more sources
High‐Pressure Transformations and Stability of Ferromagnesite in the Earth's Mantle
Geophysical Monograph Series, Page 105-113., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Eglantine Boulard +2 more
wiley +2 more sources
Adenine oxidation by pyrite-generated hydroxyl radicals
Geochemical Transactions, 2010 Cellular exposure to particulate matter with concomitant formation of reactive oxygen species (ROS) and oxidization of biomolecules may lead to negative health outcomes.
Brownawell Bruce J +3 more
doaj +1 more source
Pyrite oxidation related to pyritic minesite spoils and its controls: A review
Chinese Journal of Geochemistry, 1998 Pyrite oxidation is considered to be a main contribution to the acidification of minesite spoils and the generation of the Acid Mine Drainage (AMD) which has become the greatest threat to the ecological environment. In this paper, pyrite oxidation and its controls are reviewed with respect to the latest literature.
Zheng, Z. +3 more
openaire +4 more sources
Journal of Raman Spectroscopy, EarlyView.Recent advancements in spectral and spatial resolutions for Raman spectroscopy allow the analysis of fluid and melt inclusions. To explore the applicability of 3D Raman mapping, we conducted 3D Raman mapping on inclusions hosted by orthopyroxene in modally metasomatized mantle xenoliths from the Styrian Basin (W‐Carpathian Pannonian Region).
Justine L. Myovela +7 more
wiley +1 more source