Results 61 to 70 of about 429,179 (286)

Element Migration of Mineralization-Alteration Zones and Its Geological Implication in the Beiya Porphyry–Skarn Deposit, Northwestern Yunnan, China

Applied Sciences
Porphyry and the associated skarn-type deposit is one of the most important types of ore deposits worldwide, which usually exhibit significant zoning of mineralization-alteration, but the research on element migration in these mineralization-alteration ...
Fei Liu, Runsheng Han, Yuxinyue Guo, Mingzhi Wang, Wei Tan   +4 more
doaj   +1 more source

Hydrothermal alteration of chabazite.

The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 1978
The alteration of zeolites in the system chabazite-(SiO2) -H2O was experimentally studied using conventional hydrothermal techniques. Chabazite was transformed into the following mineral phases with increased temperature in accordance with the quantity of free silica in the reaction system.(A) Ca-harmotome+gonnasdite→wairakite→anorthite. (B) heulandite→
openaire   +2 more sources

Directing Near‐Perfect (001) Orientation in Wafer‐Scale BiOI Thin Films via Halide‐Mediated van der Waals Stacking

Advanced Materials, EarlyView.
Our work introduces a new framework that fundamentally changes how orientation in bismuth oxyhalide systems is approached. Comprehensive experiments, backed by theoretical models, reveal the pivotal role of halide anions to modify the van der Waals stacking energies required to direct orientation. Our method enables the fabrication of near perfect (001)
Gabriel Aygur, Ashakiran Maibam, Hayden Tuohey, Tony Nguyen, Mei Xian Low, Sumeet Walia, Zijun (June) Yong, Ravichandar Babarao, Daniel Gomez, Enrico Della Gaspera, Joel van Embden   +10 more
wiley   +1 more source

Origins and significance of alteration textures in hydrovolcanic products from active volcanoes

Earth, Planets and Space
While mineralization processes in hydrothermal systems have been studied intensively from the viewpoint of economic geology, the composition, and textures of hydrothermally altered materials in hydrovolcanic ash have not been fully analyzed in active ...
Yusuke Minami, Nobuo Geshi
doaj   +1 more source

Alteration of volcanic rocks and changes in physical-mechanical properties on the South-Kambalny thermal field (South Kamchatka) [PDF]

E3S Web of Conferences, 2019
The aim of this research project was to consider hydrothermal alteration of volcanic rocks and accompanying changes in their physical and mechanical properties on the thermal field of South Kamchatka.
Frolova Julia, Chernov Michael, Rychagov Sergey, Kuznetsov Ruslan, Surovtseva Ksenia   +4 more
doaj   +1 more source

Light‐Programmed Localized Supersaturation Enables Ambient Aqueous Synthesis of Highly Crystalline Metal–Organic Frameworks

Advanced Materials, EarlyView.
In the proposed model, a photoinduced nanoreactor uses Cu2O self‐photooxidation to generate localized supersaturation. A metastable supersaturation state first forms a shell, creating a spatially confined environment that restricts reactant exchange; continued Cu release then drives the local environment toward a labile regime that favors predominantly
Yongdeok Ahn, Seunghyeon Jeong, Sun Ho Park, Juhyeong Cho, Nak Cheon Jeong, Daeha Seo   +5 more
wiley   +1 more source

Structural control of the graben fault on hydrothermal alteration in the Cerro Pabellón geothermal system (Andean Cordillera, Northern Chile)

Geothermal Energy, 2023
This study focuses on hydrothermal alteration in the geothermal reservoir of Cerro Pabellón (Andean Cordillera, Northern Chile). It is based on CP2A and CP5A production wells drilled above a local normal fault and presenting unlike hydraulic properties ...
J. Vidal, P. Patrier, D. Beaufort, S. Maza, G. Rivera, G. Volpi, D. Morata   +6 more
doaj   +1 more source

Inverse Design of Nanoparticulate Materials

Advanced Materials, EarlyView.
Inverse design shifts nanomaterial development from empirical trial‐and‐error to predictive model‐driven strategies. It can rely on knowledge‐based, data‐based, or hybrid process and property functions. This perspective article provides a practical framework for applying inverse design based on instructive examples. It discusses which modeling approach
Nabi Etienne Traoré, Annika Mauch, Michelle Berthold, Lukas Pflug, Wolfgang Peukert, Nicolas Vogel   +5 more
wiley   +1 more source

Application of Machine Learning Methods for Hydrothermal Alteration Zoning using Remote Sensing Data: a Case Study of the Koldar Massif [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Hydrothermal alteration zones are among the key indicators in the exploration of porphyry copper deposits. In this study, a remote sensing-based approach was implemented to map hydrothermal alteration zones using ASTER satellite data and built-in ...
B. Adebiyet, E. Orynbassarova, M. Alpysbay, I. Kuznetsova, A. Yerzhankyzy, A. Ilyasova   +5 more
doaj   +1 more source

Phase‐Engineered MoS2 Quantum Monolayer Catalysts

Advanced Materials, EarlyView.
A new type of catalyst model—phase‐engineered MoS2 quantum‐monolayer catalyst (∼0.8 nm thick, < 6 nm in the lateral size; switchable freely among metallic 1T, semiconducting 2H, and a hybrid phase of metallic‐semiconducting 1T‐2H)—is reported. It can efficiently and stably drive photochemical H2, syngas and ammonia synthesis as a catalyst or co ...
Ruijie Yang, Yingying Fan, Lillian Pernitsky, Mojtaba Ebrahimian Mashhadi, Ningxin Chen, Md. Mehadi Hassan, Zheng Li, Heng Zhao, Liang Mei, Zhiyuan Zeng, Zhangxing Chen, Jinguang Hu, Qingye Lu   +12 more
wiley   +1 more source