Results 11 to 20 of about 8,700 (211)

Common misconceptions in crystallography and crystal optics. [PDF]

J Appl Crystallogr
Six recurrent misconceptions in crystallography, some involving mineral and crystal optics, are analyzed and discussed. The explanation of these and similar misconceptions could serve as educational resources for teachers.Did you know that an X‐ray diffraction pattern is not a spectrum?
Casas L.
europepmc   +2 more sources

Carrier-microencapsulation of arsenopyrite using Al-catecholate complex: nature of oxidation products, effects on anodic and cathodic reactions, and coating stability under simulated weathering conditions

Heliyon, 2020
Mining activities often generate large amounts of sulfide-rich wastes containing arsenopyrite (FeAsS), which when dissolved releases toxic arsenic (As) and generates acid mine drainage (AMD) that are both disastrous to the environment.
Ilhwan Park, Carlito Baltazar Tabelin, Kensuke Seno, Sanghee Jeon, Hiroyuki Inano, Mayumi Ito, Naoki Hiroyoshi   +6 more
doaj   +1 more source

Arsenopyrite Bio-Oxidization Behavior in Bioleaching Process: Evidence From Laser Microscopy, SEM-EDS, and XPS

Frontiers in Microbiology, 2020
In arsenopyrite bioleaching, the interfacial reaction between mineral and cells is one of the most important factors. The energy of the interface is influenced by the mineralogical and microbiological characteristics.
Lu Yin, Lu Yin, Hong-ying Yang, Hong-ying Yang, Lin-lin Tong, Lin-lin Tong, Peng-cheng Ma, Qin Zhang, Qin Zhang, Miao-miao Zhao, Miao-miao Zhao   +10 more
doaj   +1 more source

Carrier-microencapsulation using Al-catecholate complex to suppress arsenopyrite oxidation: Evaluation of the coating stability under simulated weathering conditions [PDF]

MATEC Web of Conferences, 2019
Arsenopyrite (FeAsS) is the most common primary arsenic-sulfide mineral in nature, and its oxidation causes the release of toxic arsenic (As). To mitigate these problems, carrier-microencapsulation (CME), a technique that passivates sulfide minerals by ...
Seno Kensuke, Park Ilhwan, Tabelin Carlito, Magaribuchi Kagehiro, Ito Mayumi, Hiroyoshi Naoki   +5 more
doaj   +1 more source

Advances in the Separation of Pyrite and Arsenopyrite by Oxidative Flotation

Kuangchan zonghe liyong, 2023
This is an essay in the field of mineral processing engineering. Pyrite and arsenopyrite are common associated sulfides. Because their crystal structures and surface properties are very similar, their flotation separation has been an important research ...
Zipei Jia, Xiangyu Song, Wen Wang, Laifu Xu, Hongtao Zhang   +4 more
doaj   +1 more source

Formation of surface protective coatings on arsenopyrite using Al-catecholate complex and its mode of inhibition of arsenopyrite oxidation [PDF]

MATEC Web of Conferences, 2019
Arsenopyrite is the most common arsenic-bearing sulfide mineral in nature. It is readily oxidized and releases toxic arsenic (As) into the environment when exposed to atmospheric conditions via anthropogenic activities like mining, mineral processing ...
Park Ilhwan, Tabelin Carlito, Inano Hiroyuki, Seno Kensuke, Higuchi Kazuki, Ito Mayumi, Hiroyoshi Naoki   +6 more
doaj   +1 more source

Application of EPMA and LA-ICP-MS to Study Mineralogy of Arsenopyrite from the Haoyaoerhudong Gold Deposit, Inner Mongolia, China

Yankuang ceshi, 2022
BACKGROUND The composition of major and trace elements in arsenopyrite can be used to identify the occurrence of elements and explore the remobilization and migration behaviour of elements in different stages.
YUN Yuanjiao, FAN Chenglong, LYU Xiping, SHI Zhefeng, DOU Zhihui, WANG Yitian, WANG Mengqi, YE Huishou   +7 more
doaj   +1 more source

Hydrothermal Treatment of Arsenopyrite Particles with CuSO4 Solution [PDF]

Materials, 2021
The nature of the hydrothermal reaction between arsenopyrite particles (FeAsS) and copper sulfate solution (CuSO4) was investigated in this study. The effects of temperature (443–523 K), CuSO4 (0.08–0.96 mol/L) and H2SO4 (0.05–0.6 mol/L) concentrations, reaction time (1–120 min), stirring speed (40–100 rpm) and particle size (10–100 μm) on the FeAsS ...
Aleksei Kritskii, Stanislav Naboichenko
openaire   +3 more sources

CHEMICAL SPECIATION OF GOLD IN ARSENOPYRITE [PDF]

The Canadian Mineralogist, 2000
The speciation of Au in gold-bearing arsenopyrite (FeAsS) from four gold deposits (Olympiada, Sentachan, Sao Bento and Sheba) was determined by micro-X-ray absorption near-edge structure (XANES) on grains well characterized microscopically and by electron-microprobe and secondary-ion mass spectrometry analyses and images.
Mcmahon, Greg, Cabri, L J, Newville, M, Gordon, R A, Crozier, E D, Sutton, S R, McMahon, G, Jiang, D T   +7 more
openaire   +2 more sources

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