Results 71 to 80 of about 93,816 (310)
Deep Underground Science and Engineering, EarlyView.The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza +3 more
wiley +1 more source
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
core
Quantitative determination of modal content and morphological properties of coal sulphides by digital image analysis as a tool to check their flotation behaviour [PDF]
, 2003 An efficient depression of coal sulphides in the flotation process means a healthier environment and may be essential for the sustainability of a coal operation.
Alvarez +13 more
core +1 more source
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
Influence of Ca2+ and Mg2+ on Pyrite Flotation at Different Slurry Temperatures
Kuangchan zonghe liyongThis is an article in the field of mineral processing engineering. Through single mineral flotation test, solution chemistry calculation, Zeta potential detection, XPS detection, the influence and regulation mechanism of Ca2+ and Mg2+ on the flotation of
Xin WANG +4 more
doaj +1 more source
AIMS Geosciences, 2017 The Central gold belt of peninsular Malaysia comprises a number of gold deposits located in the east of the N-S striking Bentong-Raub Suture Zone. The Tersang gold deposit is a mesothermal, orogenic gold deposit, which is hosted in sandstone, shale ...
Charles Makoundi, Khin Zaw, R.R. Large
doaj +1 more source
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
Mineralogy and distribution of critical elements in the Sn–W–Pb–Ag–Zn Huanuni deposit, Bolivia [PDF]
, 2019 The polymetallic Huanuni deposit, a world-class tin deposit, is part of the Bolivian tin belt. As a likely case for a “mesothermal” or transitional deposit between epithermal and porphyry Sn types (or shallow porphyry Sn), it represents a case that ...
Alfonso, Pura +12 more
core +2 more sources
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Bifunctional Co8FeS8‐FeXCy for oxygen evolution and microwave absorption. Electronic modulation for balancing oxygen intermediates bending energy over oxygen evolution catalytic active sites is one of the most critical factors but still remains challenging.
Bin Wang +7 more
wiley +1 more source
, 2004 Bulk samples of the pyrite chalcogenide solid solutions Co$_{1-x}$Fe$_x$S$_2$ 0
C. Palmstrøm +13 more
core +1 more source