Results 31 to 40 of about 801,967 (275)

Mineralogy, alteration, and sulfur isotope geochemistry of the Zehabad intermediate-sulfidation epithermal deposit, NW Iran

TURKISH JOURNAL OF EARTH SCIENCES, 2019
The Zehabad Pb-Zn-Au-Ag (Cu) deposit lies in the Alborz magmatic arc of northwestern Iran. Ore-bearing breccia veins hosted by Eocene tuffs emplaced along the 80–130° trending fault and fracture zone. Mineralization occurs in the contact of the late Eocene igneous bodies and the Eocene volcanic and volcanosedimentary Karaj Formation.
Shahbazi, Somaye, Ghaderi, Majid, Alfonso Abella, María Pura   +2 more
openaire   +3 more sources

The Shah-Ali-Beiglou Zn-Pb-Cu (-Ag) Deposit, Iran: An Example of Intermediate Sulfidation Epithermal Type Mineralization [PDF]

Minerals, 2018
The Shah-Ali-Beiglou epithermal base metal-silver deposit is located in the Tarom-Hashjin metallogenic province (THMP) in northwestern Iran. This deposit is hosted by quartz monzonite dikes of Oligocene age and surrounded by andesite to trachyandesite volcanic and volcaniclastic rocks of Eocene age.
Khadijeh Mikaeili, Mohammad Hosseinzadeh, Mohsen Moayyed, Sajjad Maghfouri   +3 more
openaire   +1 more source

Ore Petrography Using Optical Image Analysis: Application to Zaruma-Portovelo Deposit (Ecuador)

Geosciences, 2016
Optical image analysis (OIA) supporting microscopic observation can be applied to improve ore mineral characterization of ore deposits, providing accurate and representative numerical support to petrographic studies, on the polished section scale.
Edgar Berrezueta, Berta Ordóñez-Casado, Wilson Bonilla, Richard Banda, Ricardo Castroviejo, Paul Carrión, Stalin Puglla   +6 more
doaj   +1 more source

Geology, Alteration, Geochemistry, and Regional Sulfur Isotope Constraints on Pb–Zn ± Cu Mineralization in the Biga Peninsula (NW Türkiye): Insights from the Kocayayla Deposit

Applied Sciences
The Kocayayla Pb–Zn ± Cu vein-type mineralization is located in the Biga Peninsula, northwestern Türkiye. This study aims to constrain the geological, geochemical, and isotopic characteristics of the mineralization and to clarify its genetic ...
Sinan Akıska, Gökhan Demirela
doaj   +1 more source

Fluid Inclusion Study of The Tumpangpitu High Sulfidation Epithermal Gold Deposit in Banyuwangi District, East Java, Indonesia

JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2018
The Tumpangpitu high sulfidation (HS) epithermal gold deposit is located in the south coast of East Java, Banyuwangi District, East Java Province, Indonesia.
Yu Yu Myaing, Arifudin Idrus, Anastasia Dewi Titisari   +2 more
doaj   +1 more source

Epithermal mineralization of the Bonanza-Sandy vein system, Masara Gold District, Mindanao, Philippines

Journal of Asian Earth Sciences: X, 2020
The Masara Gold District in southeastern Mindanao island is an area of prolific hydrothermal copper and gold mineralization. This study documents the mineralization characteristics of the NW-trending Bonanza-Sandy epithermal veins to constrain possible ...
Jillian Aira Gabo-Ratio, Alfred Elmer Buena, Barbie Ross B. Villaplaza, Betchaida D. Payot, Carla B. Dimalanta, Karlo L. Queaño, Eric S. Andal, Graciano P. Yumul, Jr.   +7 more
doaj   +1 more source

Intermediate Species Revealed during Sulfidation of Bimetallic Hydrotreating Catalyst: A Multivariate Analysis of Combined Time-Resolved Spectroscopies

, 2017
International audienceFor the first time, the sulfidation process of a bimetallic NiMo catalyst supported on alumina has been followed by combining time-resolved laser Raman spectroscopy (LRS) and X-ray absorption spectroscopy (XAS) quasi simultaneously ...
Edmond Payen, Valérie Briois, Elodie Devers, Virginie Moizan, Christophe Pichon, Antoine Hugon, Rochet, Amélie, Amélie Rochet, Devers, Elodie, Baubet, Bertrand, Payen, Edmond, Bertrand Baubet, Hugon, Antoine, Briois, Valérie, Moizan, Virginie, Pichon, Christophe   +15 more
core   +1 more source

Sulfosalts and Sulfates in the Epithermal Au-Ag-Te Emmy Deposit (Khabarovsk Territory, Far East of Russia): Implications for the Mineralization Process

Geosciences
This study considers the features of the chemical composition, internal structure, and oscillatory zoning of sulfosalts and sulfates in the epithermal high–intermediate-sulfidation-type Au-Ag-Te Emmy deposit (Khabarovsk Territory, Russia).
Tamara Yu. Yakich, Panagiotis Voudouris, Darya V. Levochskaia, Alexey K. Mazurov, Mikhail V. Shaldybin, Yuriy M. Lopushnyak, Alexey S. Ruban, Evan Dasi, Prokopiy N. Maximov, Ekaterina A. Sinkina, Ksenia V. Bestemianova, Maxim A. Rudmin   +11 more
doaj   +1 more source

High-pressure sulfidation of a calcined CoMo/Al2O3 hydrodesulfurization catalyst

, 2008
The influence of the pressure during the sulfidation on the structure and activity of a calcined CoMo/Al2O3 catalyst was studied by Mössbauer emission spectroscopy (MES), extended X-ray absorption fine structure (EXAFS), transmission electron microscopy (
Hensen, E.J.M., Dugulan, A.I., Veen, van, J.A.R.   +2 more
core   +1 more source

Superlubricity and Corrosion Inhibition Properties of Solvate Ionic Liquids in Hybrid Carbon Fiber Reinforced Plastic–Steel Interfaces

Advanced Engineering Materials, EarlyView.
Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees, Timothy Harte, Bhagya Dharmasiri, Y. Athulya Wickramasingha, David J. Hayne, Daniel J. Eyckens, Luke C. Henderson   +6 more
wiley   +1 more source