Results 31 to 40 of about 14,846 (227)

THE CONSTITUTION OF NICKELIFEROUS PYRRHOTITE. [PDF]

Journal of the American Chemical Society, 1892
n ...
openaire   +2 more sources

Metagenomic Features Characterized with Microbial Iron Oxidoreduction and Mineral Interaction in Southwest Indian Ridge

Microbiology Spectrum, 2022
The Southwest Indian Ridge (SWIR) is one of the typical representatives of deep-sea ultraslow-spreading ridges, and has increasingly become a hot spot of studying subsurface geological activities and deep-sea mining management. However, the understanding
Ying-Wen Zhong, Peng Zhou, Hong Cheng, Ya-Dong Zhou, Jie Pan, Lin Xu, Meng Li, Chun-Hui Tao, Yue-Hong Wu, Xue-Wei Xu   +9 more
doaj   +1 more source

Self‐Reversed Magnetization in Sediments Caused by Greigite Alteration

Geophysical Research Letters, 2023
Multipolarity remanence in greigite‐bearing sediments has long been recognized, but the cause of this anomalous remanence behavior is not well understood.
Liao Chang, Zhaowen Pei, Pengfei Xue, Shishun Wang, Zhaoping Wang, Wout Krijgsman, Mark J. Dekkers   +6 more
doaj   +1 more source

Multiple carriers of Q noble gases in primitive meteorites [PDF]

, 2015
The main carrier of primordial heavy noble gases in chondrites is thought to be an organic phase, known as phase Q, whose precise characterization has resisted decades of investigation.
Amari, Brearley, Busemann, Clark, Crowther, Crozaz, Derenne, Gilmour, Gilmour, Goles, Gros, Guillaume Avice, Hewins, Hohenberg, Huss, Huss, Kellerud, Kerridge, Lewis, Lewis, Marrocchi, Marrocchi, Marrocchi, Marrocchi, Marrocchi, Marrocchi, Mathew, Matsuda, Meshik, Meshik, Nicolas Estrade, Nishimura, Ott, Ozima, Piani, Ragettli, Tachibana, Verchovsky, Vogel, Wieler, Yves Marrocchi   +40 more
core   +2 more sources

Mineralogical Characteristics and Beneficiation Experimental Study on Polytype Pyrrhotite in Kafang Deposit, Yunnan Province

Kuangchan zonghe liyong
With the increase of pyrrhotite content in Kafang copper-tungsten deposit, how to reduce the effects of pyrrhotite on the beneficiation process of copper and tungsten has become a difficult problem.
Rong ZHAO, Baoxu SONG, Jiuran PU, Jie WU, Mingbo CHEN, Xiaoyan SUN   +5 more
doaj   +1 more source

Enhanced Visualization and Interpretation of XMCD‐PEEM Data Using SOM‐RPM Machine Learning

Advanced Materials Interfaces, 2023
Photoemission electron microscopy (PEEM) is a powerful technique for surface characterization that provides detailed information on the chemical and structural properties of materials at the nanoscale.
See Yoong Wong, Sarah L. Harmer, Wil Gardner, Alex K. Schenk, Davide Ballabio, Paul J. Pigram   +5 more
doaj   +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, Arc, Artiaga, David, Cacho, Andreu, Campeny, Marc, Camprubí, Antoni, Castillo-Oliver, Montgarri, Consorci del Museu de Ciències Naturals de Barcelona, Martínez, Álvaro, Melgarejo, Joan Carles, Tauler, Esperança, Torres, Belén, Torró, Lisard   +12 more
core   +2 more sources

Study on the jarosite mediated by bioleaching of pyrrhotite using Acidthiobacillus ferrooxidans

Bioscience Journal, 2017
Precipitation of jarosite is a very important phenomenon that is observed in the bioleaching of pyrrhotite by Acidthiobacillus ferrooxidans (A. ferrooxidans).
Kaile Zhao, Guohua Gu, Guanzhou Qiu, Xiaohui Wang   +3 more
doaj   +1 more source

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

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, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

Ferrimagnetic Structure of 3C Pyrrhotite (Fe7S8) From Neutron Diffraction

Geochemistry, Geophysics, Geosystems
Pyrrhotite is a paleomagnetically important magnetic mineral in many geological settings. It forms numerous polytypes with different stacking patterns of the NiAs structure along the crystallographic c axis to produce different vacancy‐ordered ...
Chin‐Wei Wang, Chorng‐Shern Horng, Andrew P. Roberts   +2 more
doaj   +1 more source