Results 51 to 60 of about 53,501 (300)

Whole-rock geochemistry of hydrothermal alterations and its relationship with gold mineralization in the Shourab prospect, Isfahan [PDF]

علوم زمین خوارزمی
The Shourab prospect, located in the west of Central Iran, exhibits significant hydrothermal alteration and trace element anomalies linked to potential Iron Oxide Copper-Gold systems (IOCG) mineralization.
Alireza Rezaei Alishahdani, Alireza Jafari Rad, Zahra Alaminia, Mehran Arian, Hemayat Jamali   +4 more
doaj  

Aeromagnetic and Landsat-8 data interpretation for structural and hydrothermal alteration mapping along the Central and Southern Eastern Desert boundary, Egypt

Egyptian Journal of Remote Sensing and Space Sciences, 2022
Pan-African basement rocks cover the study area along the boundary between Central and Southern Eastern Desert with small exposed sedimentary sequences. Several vein-type gold mineralization with hydrothermal alteration zones have long been known in the ...
Safwat S. Gabr, Hassan Diab, Tharwat A. Abdel Fattah, Mohamed F. Sadek, Khalil I. Khalil, Mohamed A.S. Youssef   +5 more
doaj   +1 more source

Fabrication of Pyridinic Nitrogen‐Functionalized Carbon Cloth for High‐Performance Iron‐Chromium Flow Batteries

Advanced Functional Materials, EarlyView.
The carbon cloth electrode with targeted pyridinic nitrogen doping, achieved via urea pyrolysis, effectively modulates the adsorption of Cr(II) species and enhances electron transfer, leading to significantly improved kinetics of the Cr(II)/Cr(III) reaction. The material demonstrates a high discharge capacity of 689.3 mAh and an energy efficiency of 72.
Jinfeng Yi, Senwei Zeng, Runfa Zhao, Guangfu Wu, Zhi Liu, Tianhang Zhou, Chunming Xu, Jia Guo, Quan Xu, Yingchun Niu   +9 more
wiley   +1 more source

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

Geochemical Characteristics of Metamorphic Rock-Hosted Gold Deposit At Onzon-Kanbani Area, Central Myanmar

JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2017
Gold and associated base metal mineralization of Onzon-Kabani area located in the western border of generally N-S trending Mogoke Metamorphic Belt where well-known Sagaing fault is served as a western boundary of this area.
Aung Tay Zar, I Wayan Warmada, Lucas Donny Setijadji, Koichiro Watanabe   +3 more
doaj   +1 more source

Mapping Hydrothermal Alteration at the Fentale-Dofan Magmatic Segment of the Main Ethiopian Rift

Frontiers in Earth Science, 2021
The Main Ethiopian Rift (MER) is characterized by extensional tectonics and volcanism, associated with active hydrothermal systems, hydrothermal alteration and fumarolic deposits.
Martina Raggiunti, Derek Keir, Derek Keir, Carolina Pagli   +3 more
doaj   +1 more source

Sulfur-poor intense acid hydrothermal alteration: A distinctive hydrothermal environment

Ore Geology Reviews, 2017
Abstract A fundamentally distinct, sulfide-poor variant of intense acid (advanced argillic) alteration occurs at the highest structural levels in iron oxide-rich hydrothermal systems. Understanding the mineralogy, and geochemical conditions of formation in these sulfide-poor mineral assemblages have both genetic and environmental implications.
Douglas C. Kreiner, Mark D. Barton
openaire   +1 more source

Speckle‐Engineered Upconversion Amplification in Nanoemulsion‐Templated Hydrogel Microdomes

Advanced Functional Materials, EarlyView.
Nanoemulsion‐confined PEGDA microdomes generate speckle‐like excitation fields that strongly amplify upconversion luminescence upon dehydration, enabling filter‐free visible readout with reversible on–off switching. DMD‐based lithography yields scalable, shape‐programmable arrays for moisture‐responsive displays and optical encryption.
Chaeyeong Ryu, Byungcheon Yoo, Seunghun Lee, Hyungyo Jeong, Sanggyun Jeong, Heesu Cho, Jongwon Oh, Dahye Baek, Jongkyu Kim, Yubin Lee, Eunsu Gu, Dong‐Hwan Kim, Jung‐Hoon Park, Jiseok Lee   +13 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