Meitan kexue jishu, 2023 The No. 9 coal of Yunjialing Coal Mine in Handan Coalfield, which is subject to obvious magmatic intrusion, is taken as the research object. Optical microscope observation, electron probe energy spectrometry (EPMA-EDS), X-ray diffractometer (XRD), X-ray ...
Zhiyong WANG +6 more
doaj +1 more source
Distribution of the forms of sulphur in the coal bed [PDF]
, 1921 Prepared as part of an investigation conducted by the Engineering Experiment Station, University of Illinois at Urbana ...
Fraser, Thomas, Yancey, Harry Fagan
core
Deep Underground Science and Engineering, EarlyView.This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang +5 more
wiley +1 more source
Electrochemical study on Surface Oxidation of Natural Pyrite in Ferric Sulfate Solution
International Journal of Electrochemical Science, 2019 Surface oxidation of natural massive pyrite in 0.5 M sulfuric acid solutions with different ferric concentrations was investigated. The electrode of natural pyrite was made and its behavior was measured using cyclic voltammetry (CV), linear sweep ...
Guobao Chen, Hongying Yang
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Comptes Rendus. Géoscience, 2022 Lower Ordovician sandstones of the “Grès Armoricain” formation in the Montlouis quarry near Janzé (Ille-et-Vilaine, France) display rare Fe-sulfide veins filled with a low-$T$ $({
Lorand, Jean-Pierre, Pont, Sylvain
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A comparative study of X-ray tomographic microscopy on shales at different synchrotron facilities: ALS, APS and SLS. [PDF]
, 2013 Synchrotron radiation X-ray tomographic microscopy (SRXTM) was used to characterize the three-dimensional microstructure, geometry and distribution of different phases in two shale samples obtained from the North Sea (sample N1) and the Upper Barnett ...
De Carlo, Francesco +7 more
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Surface hydration‐induced damage in tight oil‐bearing sandy conglomerate reservoirs
Deep Underground Science and Engineering, EarlyView.A series of techniques such as X‐ray diffraction, scanning electron microscopy, energy‐dispersive spectroscopy, conductivity tests, and infrared thermal imaging were used. The key findings are the identification of a two‐stage surface hydration process and the elucidation of the effects of various minerals and elements on the hydration process ...
Anbang Zhao +5 more
wiley +1 more source
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
Applied SciencesThe Jiaojia gold deposit in the Jiaodong Peninsula, located in the northwestern part of the Jiaodong gold province in eastern China, has a gold reserve of over 300 t.
Yayi Fang +8 more
doaj +1 more source
Ferromagnetic Type-II Weyl Semimetal in Pyrite Chromium Dioxide
, 2017 Magnetic topological materials have recently drawn significant importance and interest, due to their topologically nontrivial electronic structure within spontaneous magnetic moments and band inversion.
Chen, Z. J. +5 more
core +1 more source