Results 91 to 100 of about 2,180 (204)

Alteration of Feldspar‐Rich Rocks on Ancient Mars and Its Possible Link to Ca/Fe‐Rich Carbonates

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract Feldspar‐rich rocks have increasingly been discovered on the martian surface. They may have been an important part of the ancient martian crust and may be related to Ca/Fe‐rich carbonates (one of two types of carbonates on Mars and the other being Mg‐rich carbonates), but compared to mafic rocks, their interaction with water on ancient Mars is
C. Wang, T. Usui, M. Melwani Daswani
wiley   +1 more source

Anhydrous minerals in asteroid Bennu: Evidence for well‐preserved primordial components

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 6, Page 963-986, June 2026.
Abstract Aqueously altered carbonaceous astromaterials are dominated by secondary minerals, but a minor fraction of primary, anhydrous silicates and oxides escape alteration, offering insight into the original composition of asteroid parent bodies. We report the mineralogy, petrology, mineral chemistry, and oxygen isotopes of anhydrous minerals—50 ...
S. S. Russell   +23 more
wiley   +1 more source

Formation of saponite by hydrothermal alteration of metal oxides: Implication for the rarity of hydrotalcite

open access: yes, 2019
Conversion of hydrotalcite (Ht) to saponite was observed by hydrothermal alkaline alteration of metal oxides. The conversion was through a pathway of hydration-dissolution-precipitation.
Zeng, Qingjin   +4 more
core   +1 more source

Study on the Thixotropy of Mineral Dispersions

open access: yesYankuang ceshi, 2014
At present, there is no national standard method to regulate the test method of thixotropy. The light industry standard of QB/T 1545-1992 is still available to test the thixotropy of nonmetallic mineral materials. The test method of thixotropy introduced
CHEN Yan-fang   +3 more
doaj   +2 more sources

Gold sorption on modified saponite

open access: yesЗаписки Горного института
A potential method for modifying saponite (intercalation) ensuring its high sorption capacity for gold was theoretically and experimentally substantiated.
Valentin A. Chanturiya   +2 more
doaj  

Polymorphic behavior of nylon 6/saponite and nylon 6/Mmontmorillonite nanocomposites

open access: yes, 2014
X-ray diffraction methods and DSC thermal analysis have been used to investigate the structural change of nylon 6/clay nanocomposites. Nylon 6/clay has prepared by the intercalation of epsilon-caprolactam and then exfoliaton of the layered saponite or ...
Chen, E.C., Wu, T.M., 吳宗明
core   +1 more source

PHASE FORMATION PROCESSES IN STEEL – BENTONITE INTERFACE IN THE CONDITIONS OF RADIOACTIVE WASTE GEOLOGICAL REPOSITORY EVOLUTION

open access: yesГеохімія техногенезу, 2019
The review work presents the analysis of up to date publications, including original ones, devoted to studying of nano-sized mineral phase formation processes on the interface surface of a bentonite buffer, mineral composition of which contains ...
Shabalin B.   +3 more
doaj   +1 more source

Interaction of Biological Molecules with Clay Minerals: A Combined Spectroscopic and Sorption Study of Lysozyme on Saponite

open access: yes, 2016
The interaction of hen egg white lysozyme (HEWL) with Na- and Cs-exchanged saponite was investigated using sorption, structural, and spectroscopic methods as a model system to study clay–protein interactions.
Cliff T. Johnston (671338)   +4 more
core   +1 more source

Surface Clay and Mineral Exploration Using Hyperspectral Imaging: Advanced Techniques for Geospatial Analysis [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
This research investigates the application of hyperspectral imaging (HSI) for surface clay and mineral exploration, specifically targeting kaolin, hematite, saponite, and illite in the Udaipur region of Rajasthan, India an area known for its complex and ...
S. Raut   +8 more
doaj   +1 more source

SAPONIT MINERALINI QAYTA ISHLASH

open access: yes
Tadqiqotlar natijasi shuni koʻrsatdiki saponit minerali tarkibida kalsiy va magniy oksidi 20-23% ni tashkil etadi. Ushbu saponit mineralini xlorid kislota bilan qayta ishlash jarayoni va kalsiy xlorid tuzi bilan qoʻshib kuydirish jarayoni orqali magniy xlorid eritmasini ajratib olish va uni magniy xloratigacha oʻtkazish boʻyicha olib borilgan ...
Pirnazarov, Feruz, Umirov, Farxod
openaire   +2 more sources

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