Results 31 to 40 of about 3,092 (126)

Chrysotile within calcite veins from Northern Apennines [PDF]

, 2014
In the Northern Apennines several olistoliths made up of serpentinites, calpionelle limestones and ophiolitic breccias have been recognized within the Porcellara Complex, Monte Cassio Unit. These olistoliths are frequently crossed by a dense network of
MATTIOLI, MICHELE, Valentini, Laura, Giordani, Matteo   +2 more
core   +1 more source

Microscale Hyperspectral Mapping of a Kilometer of Mantle Rocks: Insights Into Low‐Temperature Serpentinization Systems From the Oman Drilling Program Cores

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Characterizing products of water‐rock interactions in low‐temperature serpentinization of ultramafic rock is key to reconstructing fluid alteration histories of the crust and identifying subsurface habitable environments. We analyzed terrestrial peridotites from the Samail ophiolite using visible to near‐infrared (VNIR‐SWIR) microimaging ...
Lucia Mandon, Bethany L. Ehlmann, Rebecca N. Greenberger, Eric T. Ellison, Lisa E. Mayhew, Alexis S. Templeton   +5 more
wiley   +1 more source

Ethanol fermentation of a diluted molasses medium by Saccharomyces cerevisiae immobilized on chrysotile

Brazilian Archives of Biology and Technology, 2003
In this work, the catalytic role of chrysotile support on the acceleration of alcoholic fermentation under non-aseptic conditions by Saccharomyces cerevisiae was investigated. The fermentation medium employed consisted only of diluted sugar-cane molasses.
Ranulfo Monte Alegre, Maurício Rigo, Inés Joekes   +2 more
doaj   +1 more source

Hydrothermal Manganese‐Oxide Mineralization of a Carbonate Ooze, Samoan Hotspot Region, South Pacific Ocean

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract Low‐temperature hydrothermal manganese oxides occur throughout the global oceans. However, the hydrothermal replacement of a carbonate ooze by manganese oxides is described here for the first time. The 24 samples dredged from three locations around the Territory of American Samoa in the South Pacific Ocean include six samples with remnant ...
James R. Hein, Amy Gartman, Kira Mizell, Mark Baskaran, Anthony Koppers, Hubert Staudigel   +5 more
wiley   +1 more source

Chemical, thermal and infra-red characterization of chrysotile modes from the Wadi Daftah serpentinite (Semail ophiolite), United Arab Emirates

Discover Geoscience
Serpentine minerals, either polymorphs or polytypes (mostly chrysotile, lizardite and antigorite), are hardly distinguished in ophiolitic serpentinites and serpentinized peridotite unless sophisticated mineralogical tools are applied.
Mohamed Th. S. Heikal, Adel A. Surour, Abdelaziz A. Said   +2 more
doaj   +1 more source

Synthesis and performance of polyurethane/silicon oxide nano-composite coatings

Science and Engineering of Composite Materials, 2019
Chrysotile asbestos has excellent physical and chemical properties, but its high biotoxicity is very damaging to human health, due to its durability, high aspect ratio, and the exist of iron.
Zhang Junrui, Jiang Guojun, Huang Tianhao, Yu Weihua, Gao Yu   +4 more
doaj   +1 more source

Structural Evolution of Antigorite by High‐Velocity Impacts

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Serpentine is a major hydrous mineral present in hydrous asteroids that have evolved through planetary impacts. Understanding its dynamic behavior is essential to elucidate the redistribution and retention of water during high‐velocity impact processes. The shock response of antigorite was examined at pressures up to 106 GPa using laser‐driven
Yuhei Umeda, Yusuke Seto, Naotaka Tomioka, Hiroshi Arima‐Osonoi, Yoichiro Hironaka, Yuichi Inubushi, Kento Katagiri, Ryosuke Kodama, Kohei Miyanishi, Hirotaka Nakamura, Norimasa Ozaki, Tomoko Sato, Keiichi Sueda, Tadashi Togashi, Toshinori Yabuuchi, Makina Yabashi, Toshimori Sekine, Takuo Okuchi   +17 more
wiley   +1 more source

Raman spectroscopy of the nickel silicate mineral pecoraite –an anologue of chrysotile (asbestos) [PDF]

, 2008
The molecular structure of the mineral pecoraite, the nickel analogue of chrysotile of formula Ni3Si2O5(OH)4 has been analysed by a combination of Raman and infrared spectroscopy.
Reddy, B. Jagannadha, Dickfos, Marilla J., Ray L. Frost, B. Jagannadha Reddy, Marilla J. Dickfos, Frost, Ray L.   +5 more
core   +1 more source

Alteration of a Mantle‐Derived Dunite Boulder in Jezero Crater, Mars

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract In 2023, the Mars 2020 Perseverance rover explored the youngest preserved deposits on the Western fan of Jezero crater, Mars: a field of meter‐scale boulders dispersed above the previously explored sandstone and siltstone units. Reflectance spectra of the boulders delineated two classes, one olivine‐bearing and one pyroxene‐bearing.
E. L. Moreland, M. Bramble, K. L. Siebach, A. C. Pascuzzo, M. Morris, S. J. VanBommel, M. Jones, S. Siljeström, A. Srivastava, A. H. Treiman, J. Hurowitz   +10 more
wiley   +1 more source

The 2021–2022 Fukushima‐Oki Earthquakes in Northeastern Japan: Dehydration Triggered Fault Reactivation Boosted by Slab Segmentation

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract The 2021–2022 Fukushima‐Oki earthquakes in northeastern Japan provide a valuable opportunity to deepen our understanding of intraslab earthquakes generated by the reactivation of subducted outer‐rise bending faults. This study integrates high‐resolution seismic velocity models with numerical modeling results to investigate the roles of slab ...
Yuyang Tan, Liangliang Wang, Mutian Qin, Jianchao Wang, Jianming Zhang, Huilin Xing, Sanzhong Li, Haijiang Zhang   +7 more
wiley   +1 more source