Results 71 to 80 of about 106,819 (219)

Geochemistry of hydrothermal alterations associated with epithermal gold mineralization in Masjeddaghi area, east of Jolfa, NW Iran

Journal of Economic Geology, 2011
Two types of mineralization including porphyry copper and epithermal gold mineralization have occurred in relation with an intermediate volcano-plutonic complex in Masjeddaghi area.
Ali Imamalipour, Hossein Abdeli Eslamlo, Behzad Haj Alilou   +2 more
doaj   +1 more source

Martian Proton Albedo as Signature of Near‐Surface Water

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract Understanding the Martian soil water budget is crucial not only for in situ resource utilization in future human missions to Mars, but also for reconstructing the geological and climatic history of the planet, as well as to assess the potential of ancient or even present microbial life.
Jan Leo Löwe, Robert F. Wimmer‐Schweingruber, Salman Khaksari, Sven Löffler, Sergey Nikiforov, Maya Djachkova, Jingnan Guo, Gabin Charpentier, Bent Ehresmann, Donald M. Hassler, Daniel Matthiä, Thomas Berger, Günther Reitz, Cary Zeitlin   +13 more
wiley   +1 more source

Epithermal gold mineralization at Wadi Abu Khushayba, southwestern Jordan

Ore Geology Reviews, 2010
Abstract The Wadi Abu Khushayba area in southwestern Jordan hosts an auriferous, quartz-veined shear zone with features of an epithermal low-sulfidation gold system. The quartz-lode and quartz-carbonate mineralization is characterized by open-space textures, typically with sharp-walled veins and multi-stage brecciation of the late Neoproterozoic ...
M. Al-Hwaiti, B. Zoheir, B. Lehmann, I. Rabba   +3 more
openaire   +1 more source

Origins of the Pangkaimen Au Deposit in the Northern Great Xing'an Range, China: Evidence From Geochronological, Geochemical, Fluid Inclusion, and H–O–S–Pb Isotope Data

Geological Journal, Volume 61, Issue 5, Page 1291-1309, May 2026.
The Pangkaimen Au–Ag deposits belong to the epithermal Au deposits, which are of great significance for guiding the research and development of this type of gold deposit. Metallogenic model diagram of Pangkaimen Au–Ag deposit. ABSTRACT The gold (Au) metallogenic belt in the northern Great Xing'an Range is characterised by the wide occurrence of the ...
Sheng Lu, Hongpeng Chen, Chenglu Li, Ye Wang, Tiesheng Li, Rigen Wu, Zengtao Li, Zhichao Song, Xiannan Zhu   +8 more
wiley   +1 more source

Radiolysis and Fe‐Biotite Alteration: Questioning the Origin of H2‐Bearing Fluid Inclusions in the Yorke Peninsula Granites, South Australia

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Multiple drillings in the Yorke Peninsula, South Australia, recently confirmed the presence of natural hydrogen (H2) in shallow sedimentary units. While radiolysis and Fe‐oxidation in the basement are potential generation mechanisms, their respective contributions remain unconstrained.
Ugo Geymond, Dan Lévy, Julien Bourdet, Isabelle Martinez, Olivier Sissmann, Sidonie Revillon, Rayanne Gormit, Sylvain Bernard, Pierre‐Henri Blard, David Bekaert, Jimmy Daynac, Stephan Borensztajn, Se Gong, Clément Herviou, Emanuelle Frery, Isabelle Moretti   +15 more
wiley   +1 more source

Hydrothermal fluids evolution from various alteration – mineralization zones of Dehsalm porphyry type system, Lut block, Eastern Iran [PDF]

, 2011
منطقه اکتشافي دهسلم در خراسان جنوبي و در کمربند آتشفشاني – نفوذي بلوک لوت قرار گرفته است. تودههاي نيمه عميق حدواسط تا اسيدي مربوط به اليگوسن، درون تواليهاي آتشفشاني، ماسهسنگ و سيلتستون ائوسن نفوذ کردهاند.
Karimpour, M. H., Arjmandzadeh, R., Santos, J. F., Homam, S. M., Medina, J. M., Mazaheri, S. A.   +5 more
core   +1 more source

Integrating PCA and Fractal Modeling for Identifying Geochemical Anomalies in the Tropics: The Malang–Lumajang Volcanic Arc, Indonesia

Geosciences
Intense chemical weathering in tropical environments poses challenges for conventional geochemical exploration, as primary lithological signatures become heavily altered.
Wahyu Widodo, Ernowo Ernowo, Ridho Nanda Pratama, Mochamad Rifat Noor, Denni Widhiyatna, Edya Putra, Arifudin Idrus, Bambang Pardiarto, Zach Boakes, Martua Raja Parningotan, Triswan Suseno, Retno Damayanti, Purnama Sendjaja, Dwi Rachmawati, Ayumi Hana Putri Ramadani   +14 more
doaj   +1 more source

Constraining the Hydration of Clay Minerals and Abundances of Amorphous Phases in Gale Crater, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Both water and organic matter are required for the development and persistence of life. Phyllosilicates (clay minerals) have high surface areas that easily sorb water and organic matter. The Curiosity rover has investigated several hundred meters of stratigraphy in Gale crater, including where clays were detected from orbit.
Sean Czarnecki, Craig Hardgrove, Liz Rampe, Patrick Gasda   +3 more
wiley   +1 more source

The Engineer Mine, British Columbia: An example of epithermal Au-Ag mineralization with mixed alkaline and subalkaline characteristics

, 2017
The Engineer Mine epithermal precious metal deposit in British Columbia, Canada, is related to Eocene Sloko-Skukum-Group (SSG) volcanism and, according to previous studies, contains roscoelite in intimate association with electrum. Roscoelite, a vanadian
Raudsepp, M., Archibald, D., Devine, F., Beinlich, Andreas, Millonig, L., Groat, L., Linnen, R.   +6 more
core   +2 more sources

CI chondrite Oued Chebeika 002 links asteroids Bennu and Ryugu to common parent body

Meteoritics &Planetary Science, Volume 61, Issue 5, Page 801-818, May 2026.
Abstract CI chondrites are a compositionally primitive group of meteorites that have undergone extensive aqueous alteration, providing insights into the evolution of primitive planetesimals. Oued Chebeika 002 is the most pristine CI chondrite to date.
Megan Broussard, Katharina Lodders, Paul K. Carpenter, Piers Koefoed, Karen Ziegler, Kunihiko Nishiizumi, Marc W. Caffee, Laurence A. J. Garvie, Ryan C. Ogliore, Anthony J. Irving, Bradley L. Jolliff, Kun Wang   +11 more
wiley   +1 more source