Results 51 to 60 of about 2,594 (147)

3D SR‐μXCT analysis for lithology detection: Application to Ryugu sample A0159

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 11, Page 2623-2654, November 2025.
Abstract Extraterrestrial breccia samples are formed through impact‐related processes that combine the fragments of distinct lithologies. As such, they are valuable indicators of the complex formation and evolution history of planetesimals in our solar system.
Léna Jossé   +9 more
wiley   +1 more source

Amazonian Hydrothermal Alteration Comparing Nakhlite Secondary Mineralogy to Water Rock Reaction Experiments [PDF]

open access: yes, 2018
We report on results from experiments with Mars analog materials under diagenetic conditions. The mineralogical results of our experiments suggest that an important type of fluid alteration in the Amazonian may be short duration (e.g.
Bridges, J. C.   +14 more
core  

Composition of Jupiter irregular satellites sheds light on their origin [PDF]

open access: yes, 2017
Irregular satellites of Jupiter with their highly eccentric, inclined and distant orbits suggest that their capture took place just before the giant planet migration.
Bhardwaj, A.   +6 more
core   +3 more sources

Intercalated theophylline-smectite hybrid for pH-mediated delivery [PDF]

open access: yes, 2018
On the basis of their large specific surface areas, high adsorption and cation exchange capacities, swelling potential and low toxicity, natural smectite clays are attractive substrates for the gastric protection of neutral and cationic drugs ...
A Cojocariu   +21 more
core   +4 more sources

Carbon Isotope and Abundance Systematics Reveal an Insignificant Crustal Sink of Mantle‐Derived CO2 in On‐Land Rift Zone Geothermal Systems

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 10, October 2025.
Abstract Rift zones, both on land and submarine, are key pathways for mantle‐derived CO2 degassing to the Earth's surface. Fixation of CO2 as carbonates plays a critical role in regulating these emissions. This study examines carbon abundance and isotope compositions in hydrothermal fluids, altered rocks, and carbonates from geothermal systems in both ...
Barbara I. Kleine‐Marshall   +23 more
wiley   +1 more source

Geologic history of Martian regolith breccia Northwest Africa 7034: Evidence for hydrothermal activity and lithologic diversity in the Martian crust [PDF]

open access: yes, 2016
The timing and mode of deposition for Martian regolith breccia Northwest Africa (NWA) 7034 were determined by combining petrography, shape analysis, and thermochronology.
Adcock   +151 more
core   +3 more sources

Evidence for ammonium-bearing minerals in Ceres [PDF]

open access: yes
Evidence for ammonium-bearing minerals was found on the surface of the largest asteroid Ceres. The presence of ammonium-bearing clays suggests that Ceres has experienced a period of alteration by substantial amounts of an ammonium-bearing fluid.
Brown, R. H.   +5 more
core   +1 more source

Hydrothermal synthesis and characterization of dioctahedral smectites: A montmorillonites series [PDF]

open access: yes, 2008
International audienceThe aim of this study is to synthesize and finely characterize montmorillonite samples, dioctahedral smectites without tetrahedral charges (structural formulae Nax(Al(2 − x)Mgx)Si4O10(OH)2), to allow their use as reference samples ...
Bény, Jean-Michel   +3 more
core   +3 more sources

Field trip guide and abstracts of the sepiolite symposium : june 7th, 2010, Madrid-Seville, Spain /2010 SEA-CSSJ-CMS Trilateral Meeting on Clays [PDF]

open access: yes, 2010
Depto. de Mineralogía y PetrologíaFac.
Cuevas, Jaime, ed. lit.   +4 more
core  

A study of some chemical and physical properties of the clay minerals nontronite, attapulgite and saponite [PDF]

open access: yes, 1942
Publication authorized October 12, 1942."The bulletin comprises the major part of the thesis presented by O.G. Caldwell for the degree of doctor of philosophy in the University of Missouri"--P.
Caldwell, Orval Graham, 1906-   +1 more
core  

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