Results 181 to 190 of about 50,853 (257)
Geostandards and Geoanalytical Research, Volume 49, Issue 3, Page 645-664, September 2025.Key Points A stoichiometric calibration method for dual‐energy computed tomography allows non‐destructive characterisation of materials. Different acquisition settings and three different scanners were tested, characterising three rocks of known composition. Comparison of measurement results reveals the key parameters to be considered to perform useful
Margherita Martini +7 more
wiley +1 more source
Kinetic Studies on the Leaching of Pyrite with Plate Specimens
, 1975 Tadao Nagai, Hiromichi KIUCHI
openalex +2 more sources
Surface electrochemical control for the fine coal and pyrite separation
, 1989 Wanxiong Chen +5 more
openalex +3 more sources
Geostandards and Geoanalytical Research, Volume 49, Issue 3, Page 495-533, September 2025.Key Points Synchrotron nano‐imaging is necessary to locate elemental nanophases. Trace metal quantification requires high sensitivity nano‐XRF. Trace metal speciation relies on nano‐XANES using nano‐XRF. This chapter (Nano‐Imaging for Advanced X‐ray Fluorescence and Absorption Spectroscopy Applications) is a contribution to the Geostandards and ...
Alexandre S. Simionovici +1 more
wiley +1 more source
Oxidation of Iron Sulfide and Pyrite by Ferric Oxide
, 1970 Hisashi Uchiyama +2 more
openalex +2 more sources
Wellbore Skin: Why Its Presence and Properties Are So Difficult to Predict
Groundwater, Volume 63, Issue 5, Page 672-684, September/October 2025.Abstract The presence of positive wellbore skin, that is, deposits of fine‐grained particles from the drilling fluid on the borehole wall, significantly affects the efficiency of water wells. Previous studies of skin samples have shown a significant variability in typology, thickness, and composition but were largely unable to explain the differences ...
Georg J. Houben +6 more
wiley +1 more source
Geophysical Research Letters, Volume 52, Issue 16, 28 August 2025.Abstract Arsenic accumulation in seafloor cold seeps is poorly understood. Here, we investigate the interplay between arsenic and methane biogeochemical cycles at the Haima cold seep, South China Sea. Geochemical analyses showed elevated arsenic levels in seep sediments, primarily as sulfide‐bound forms, with strong correlations between dissolved ...
Jiwei Li +12 more
wiley +1 more source
High pressure compressibilities of pyrite and cattierite.
, 1986 Tetsuo Fujii +4 more
openalex +2 more sources