Results 81 to 90 of about 29,721 (224)

Hornblendite in the Lower Crust: A Possible Source for Porphyry Cu Deposits

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Lower crustal sulfide‐bearing Cu‐rich cumulates, mainly occurring as hornblendite, have been proposed as a critical source component for the development of giant porphyry Cu deposits (PCDs); however, their mineralogical and geochemical nature remain elusive.
Guangxu Li, Lingsen Zeng, Li‐E. Gao, Lilong Yan, Haitao Wang, Linghao Zhao   +5 more
wiley   +1 more source

Characterisation of Thin Films CuIn1-xAlxSe2 Prepared by Selenisation of Magnetron Sputtered Metallic Precursors [PDF]

, 2007
Thin films of CuIn1-xAlxSe2 have been produced by the selenisation of magnetron sputtered Cu/In/Al precursor layers using elemental selenium and the chemical and physical properties of the layers have been determined for different conditions of synthesis.
Forbes, Ian, Miles, Robert, Nasikkar, Paresh, Zoppi, Guillaume   +3 more
core   +1 more source

Ediacara Obscura: Unveiling Hidden Magnetisations in the Fen Complex, Southern Norway

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Paleomagnetic directions found in Ediacaran (635–539 Ma) rocks are widely dispersed, which has led to conflicting hypotheses about tectonic regimes and geomagnetic field behavior during this period, and raised doubts about the fidelity of the paleomagnetic record.
Justin A. D. Tonti‐Filippini, Paul Y. J. Antonio, Sven Dahlgren, Rosa de Boer, Leandro Gallo, Petter Silkoset, Bertwin de Groot, Lennart de Groot, Mathew Domeier   +8 more
wiley   +1 more source

Effects of Thermal Pretreatment on the Oxidative Dissolution of Chalcopyrite: Electrochemical Study with Synthetic Minerals

Journal of MMIJ
Understanding the leaching mechanism of chalcopyrite from natural resources is important for expanding Cu production via hydrometallurgical processes.
Katsuya KOMORITA, Yu-ki TANINOUCHI, Hiroaki NAKANO   +2 more
doaj   +1 more source

Study of the Electrochemical Passive-Active Transition of Chalcopyrite in Acidic Solution

International Journal of Electrochemical Science, 2016
The electrochemical behaviors of chalcopyrite in 1.0 M H2SO4 were studied by potentiodynamic polarization. The experimental results revealed that chalcopyrite has four different potential ranges: passive for OCP up to 500 mV; trans-passive dissolution ...
Qingyou Liu, Kai Zheng, Xiaoying Wen, Heping Li   +3 more
doaj   +1 more source

Ellipsometry Optical Gas Sensor of SnO2/Porous‐Si Heterostructure for Organic Compounds Detection

Advanced Sensor Research, Volume 5, Issue 4, April 2026.
ABSTRACT This study presents a low‐temperature optical gas sensing platform based on tin dioxide (SnO2) thin films deposited on porous silicon (por‐Si) substrates. The por‐Si scaffold was fabricated electrochemically, followed by SnO2 deposition via RF magnetron sputtering.
Margulan Ibraimov, Bakyt Khaniyev, Yerbolat Tezekbay, Raikhan Azamat, Nikolai Yakovlev, Olzat Toktarbaiuly, Mergen Zhazitov, Mirat Karibayev, Beksultan Akilbekov, Jianxi Liu, Anuar Aldongarov, Sergei Piskunov, Tolagay Duisebayev   +12 more
wiley   +1 more source

Compositions of Cu-(Fe)-Sulfides in the 109 Reduced Granite-Related Cu Deposit, Xinjiang, Northwest China: Implications to the Characteristics of Ore-Forming Fluids

Geofluids, 2020
In general, porphyry Cu deposit is related to the highly oxidized ore-forming system. However, there are many porphyry Cu deposits that are related to the reduced ore-forming system, and the ore-forming characteristics of reduced porphyry Cu deposit are ...
Rui Liu, Genwen Chen, Jianxing Yang
doaj   +1 more source

A robotic platform for high-throughput electrochemical analysis of chalcopyrite leaching [PDF]

, 2015
A novel robotic platform for combinatorial screening of ionic liquid-based Cu extraction from chalcopyrite with real-time, in situ monitoring of dissolved copper.
Albrecht, T, Bannock, JH, Godfrey, D, Kuzmina, O, Welton, T   +4 more
core   +1 more source

Sodium Induced Beneficial Effects in Wide Bandgap Cu(In,Ga)S2 Solar Cell With 15.7% Efficiency

Progress in Photovoltaics: Research and Applications, Volume 34, Issue 4, Page 439-452, April 2026.
Wide bandgap Cu(In,Ga)S2 absorbers grown on soda‐lime glass (SLG) were optimized by introducing additional sodium (Na) via in situ NaF co‐evaporation. Optimal Na incorporation enhanced crystallinity, minimized Ga fluctuations across the depth, suppressed bulk defects, and reduced non‐radiative losses.
Arivazhagan Valluvar Oli, Kulwinder Kaur, Michele Melchiorre, Aubin Jean‐Claude Mireille Prot, Sevan Gharabeiki, Yucheng Hu, Gunnar Kusch, Adam Hultqvist, Tobias Törndahl, Wolfram Hempel, Wolfram Witte, Rachel A. Oliver, Susanne Siebentritt   +12 more
wiley   +1 more source

Effect of Ultrasonic Pre-Treatment and Aeration on Flotation Separation of Chalcopyrite from Pyrite [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2018
In this paper, the effect of ultrasonic pre-treatment and aeration on the flotation separation of chalcopyrite from pyrite was investigated at different amounts of potassium ethyl xanthate (KEX), as a collector, and pH values.
Bijan Taheri, Majid Lotfalian
doaj