Results 31 to 40 of about 220,175 (263)

Effects of Metasomatism on Granite-Related Mineral Systems: A Boron-Rich Open Greisen System in the Highiş Granitoids (Apuseni Mountains, Romania)

Minerals, 2023
Greisenization is typically linked with highly fractionated granites and is often associated with hydrothermal vein systems. Late to postmagmatic metasomatic processes involve the enrichment of volatile components such as boron and halogens as well as ...
A. Varga, Attila Pozsár, N. Zajzon, Boglárka A. Topa, Z. Benkő, E. Pál-Molnár, B. Raucsik   +6 more
semanticscholar   +1 more source

Sulfur loss from subducted altered oceanic crust and implications for mantle oxidation [PDF]

, 2020
© The Author(s), [year]. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Walters, J. B., Cruz-Uribe, A. M., & Marschall, H. R.
Cruz‐Uribe, Alicia M., Marschall, Horst R., Walters, Jesse B.   +2 more
core   +1 more source

REE Mobility and Fluid Evolution at the Magmatic-Hydrothermal Transition of the Lemitar Carbonatite, New Mexico

Goldschmidt2023 abstracts, 2023
The Lemitar Mountains carbonatite rare earth element (REE) deposit in New Mexico comprises more than one hundred surface exposures of carbonatite dikes intruded into Proterozoic mafic and intermediate rocks [1].
Eric L. Ruggles, Nicole C. Hurtig, Alexander P Gysi, Virginia Mclemore   +3 more
semanticscholar   +1 more source

Relation of alkali-metasomatism and Ti-REE-U (Th) mineralization in the Saghand mining district, Central Iran

Journal of Economic Geology, 2019
Introduction The Saghand mining district is a part of Bafq-Saghand metallogenic zone in the Central Iranian geostructural zone which is located in northeast of city of Yazd.
Saleh Deymar, Mehrdad Behzadi, Mohammad Yazdi, Mohammad Reza Rezvanianzadeh   +3 more
doaj   +1 more source

Metasomatism by Boron-Rich Fluids along Permian Low-Angle Normal Faults (Central Southern Alps, N Italy)

Minerals, 2022
Low-Angle Normal Faults (LANFs) represent in the central Southern Alps area (N Italy) the main structures along which the Variscan basement is in contact with the Upper Carboniferous-Permian volcanic-sedimentary succession. Tourmalinites frequently occur
S. Zanchetta, Sofia Locchi, Gregorio Carminati, Manuel Mancuso, C. Montemagni, A. Zanchi   +5 more
semanticscholar   +1 more source

Gold, platinum and palladium enrichments in arcs: role of mantle wedge, arc crust and halogen-rich slab fluids [PDF]

E3S Web of Conferences, 2019
Arc-related magmas are frequently enriched in Au, Pt and Pd in respect to MORB and OIB igneous suites. Magmatic arcs commonly host large-scale hydrothermal Au and Au-Cu and PGE mineralization related to young volcanic systems and zoned ultramafic ...
Kepezhinskas Pavel, Kepezhinskas Nikita, Berdnikov Nikolai   +2 more
doaj   +1 more source

Relationship of copper-molybdenum and gold minering with magmatism [PDF]

E3S Web of Conferences
In the investigated deposits, a combination of skarn and hydrothermal mineralization has been identified. Specific facies within intrusive complexes align with distinct postmagmatic formations.
Zhonibekov Bobur, Tulyaganova Nargiza, Adilkhanov Karim, Adilov Bakhram, Abdusamatova Dilafruz   +4 more
doaj   +1 more source

Hydrothermal Alteration Zones’ Magnetic Susceptibility Footprints and 3D Model of Iron Oxide-Copper-Gold (IOCG) Mineralization, Carajás Mineral Province, Brazil

Minerals, 2022
Brownfield areas are important targets of exploration; however, the extensive drilling present in these areas has not fully exploited their prospective potential.
M. Leão-Santos, R. Moraes, Yaoguo Li, Maria Irene Raposo, B. Zuo   +4 more
semanticscholar   +1 more source

Rear polymineral zone of near-veined metasomatic aureole in mesothermal Zun-Holba gold deposit (Eastern Sayan) [PDF]

, 2015
Unique data of the mineralogical and petrochemical zoning of near- veined metasomatic aureole of mesothermal Zun-Holba gold deposit are presented and discussed.
Abramova, Raisa Nikolaevna, Cherkasova, Tamara Yurievna, Kucherenko, Igor Vasilyevich   +2 more
core   +1 more source

Major and rare earth element mineral chemistry of low-grade assemblages inform dynamics of hydrothermal ocean-floor metamorphism in the Dinaridic Neotethys

Geological Magazine, 2022
This contribution provides insights into ocean-floor hydrothermal metamorphism of the fast-evolving Dinaridic Neotethys. Mineralogical, geochemical and Sr isotope data collected from altered ophiolites and non-ophiolite basalts/andesites and tuffs of the
B. Šegvić, Damir Slovenec, L. Badurina
semanticscholar   +1 more source