Results 41 to 50 of about 233 (169)

Fluid Flow, Mineralization and Deformation in an Oceanic Detachment Fault: Microtextural, Geochemical and Isotopic Evidence From Pyrite at 13°30′N on the Mid‐Atlantic Ridge

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 1, January 2024.
Abstract Hydrothermal fluids in ultramafic‐hosted hydrothermal systems associated with oceanic detachment faults can be more oxidizing compared to mafic‐hosted vent sites. These fluids form a mineral assemblage of pyrite, magnetite and hematite. At 13°30′N on the Mid‐Atlantic Ridge, chlorite‐quartz breccias recovered from an exposed fault scarp contain
Andrew J. Martin, John W. Jamieson, Sven Petersen, Mostafa Fayek, Javier Escartin   +4 more
wiley   +1 more source

Study of specifications of the second index Baba-Ali,‎unusual magnetite-limonite layered deposit ‎‎(Hamedan province)‎ [PDF]

پترولوژی, 2018
Baba Ali Index 2, iron deposit is located in the northwest of Hamedan province and the southwestern of Baba Ali village in the Sanandaj-Sirjan structural zone.
Mehrdad Barati, Laila Karimian Navid, meisam Gholipoor   +2 more
doaj   +1 more source

Alteration and petrology of Intrusive Rocks associated with Gold Mineralization at Kuh-E-Zar Gold Deposit, Torbat-e-Heydaryeh

Journal of Economic Geology, 2010
Kuh- e -Zar gold deposit located 35 km west of Torbat-e-Heydaryeh, (Khorassan e- Razavi province), East of Iran. This deposit is a specularite-rich Iron oxide type (IOCG). This mine is situated within Khaf-Bardascan volcanic plutonic belt.
Alireza Mazloumi Bajestani, Iraj Rasa
doaj   +1 more source

A hybrid framework for modelling domains using quantitative covariates

Applied Computing and Geosciences, 2022
Domains define the boundaries of mineralisation zones, within which the grade distribution of the target minerals can be quantified via an established mineral resource estimation procedure.
Yerniyaz Abildin, Chaoshui Xu, Peter Dowd, Amir Adeli   +3 more
doaj   +1 more source

Alteration, mineralization, geochemistry and fluid inclusion study of the Firouzeh mine, NW Neyshabour

Journal of Economic Geology, 2019
The Firouzeh mine is located in the Northwest of Neyshabour in the Khorasan Razavi province, Northeast of Iran, and eastern side of the Quchan-Sabzevar Cenozoic magmatic arc.
Alireza Ghiasvand, Mohammad Hassan Karimpour, Azadeh Malekzadeh Shafaroudi, Mohammad Reza Haidarian Shahri   +3 more
doaj   +1 more source

Structural Control and Timing of the Iron-Oxide-Copper-Gold (IOCG) Skarn Formation at Tatatila-Las Minas Mining District (Central Mexico)

Geosciences
The iron-oxide-copper-gold (IOCG) skarns of the Tatatila-Las Minas mining district in central Mexico represent a structurally-controlled, exhumed fossil geothermal system located in the eastern sector of the Trans-Mexican Volcanic Belt (TMVB).
Martina Zucchi, Emmanuel Olvera-García, Domenico Liotta, Andrea Brogi, Alfredo Caggianelli, Marinella Ada Laurenzi, Walter H. Wheeler, Caterina Bianco, Fidel Gómez-Alvarez, Sergio Najera-Blas, Adrián Jiménez-Haro, Jorge Alejandro Guevara-Alday, Guia Morelli, Gennaro Ventruti, Andrea Orlando, Giovanni Ruggieri   +15 more
doaj   +1 more source

Neyshabour turquoise mine: the first Iron Oxide Cu-Au-U-LREE (IOCG) mineralized system in Iran

Journal of Economic Geology, 2012
Neyshabour turquoise mine is located in northwest of Neyshabour, southern Quchan volcanic belt. Eocene andesite and dacite forming as lava and pyroclastic rocks cover most of the area.
Mohammad Hasan Karimpour, Azade Malekzadeh Shafaroudi, Akbar Esfandiarpour, Hasan Mohammad Nejad   +3 more
doaj   +2 more sources

Unraveling the origin of the Andean IOCG clan: A Re-Os isotope approach [PDF]

Ore Geology Reviews, 2017
The Andean IOCG clan in the Coastal Cordillera of northern Chile, comprises the iron oxide-Cu-Au sensu stricto, the iron oxide-apatite (IOA), and the stratabound Cu(− Ag) deposits, also known as Manto-type Cu(− Ag) deposits. IOCGs and Manto-type deposits constitute the second source of copper in Chile, after porphyry Cu-Mo systems, whereas IOAs are an ...
Barra Pantoja, Fernando, Reich Morales, Martín, Selby, David, Rojas, Paula, Simon, Adam C., Salazar, Eduardo, Palma, Gisella   +6 more
openaire   +7 more sources

Geology, mineralization, U-Pb dating and Sr-Nd isotope geochemistry of intrusive bodies in northeast of Kashmar

Journal of Economic Geology, 2015
Alireza Almasi1, Mohammad Hassan Karimpour1*, Khosrow Ebrahimi Nasrabadi1, Behnam Rahimi1, Urs KlÖtzli2 and Jose Francisco Santos3 Introduction The study area is located in central part of the Khaf- Kashmar-Bardeskan belt which is volcano-plutonic belt
Alireza Almasi, Mohammad Hassan Karimpour, Khosrow Ebrahimi Nasrabadi, Behnam Rahim, Urs KlÖtzli, Jose Francisco Santos   +5 more
doaj  

The Deep Lithospheric Structure of the South Australian Craton Revealed by Teleseismic Rayleigh Wave Tomography

Seismica
We used teleseismic Rayleigh waves recorded by three recent broadband seismic arrays in southern Australia to develop a shear wave velocity model of the South Australian Craton from the lower crust to 250 km depth and compare this with isotope data ...
John Paul O'Donnell, Kate Selway, Claire Wade, Stephan Thiel, Caroline Eakin, Robert Pickle, Shubham Agrawal, Bruce Goleby, Alexei Gorbatov   +8 more
doaj   +1 more source