Results 51 to 60 of about 5,147 (236)

Igneous and sedimentary origins of Jezero crater units from X-ray crystal mapping on Mars

Communications Earth & Environment
Jezero crater is located in Mars’ largest olivine-rich region, which is variously interpreted as lava flows, intrusive plutons, clastic sediments, or pyroclastics.
Brendan J. Orenstein, David T. Flannery, Michael W. M. Jones, Eleanor L. Moreland, Kirsten L. Siebach, Michael M. Tice, Allan H. Treiman, Briony Horgan, Balz Kamber, Athanasios Klidaras, Luke Nothdurft, Yang Liu, Edward A. Cloutis, Abigail C. Allwood, Scott VanBommel   +14 more
doaj   +1 more source

CRYSTALLIZATION CONDITIONS OF OLIVINE IN DUNITES THE GULI MASSIF, SIBERIAN PLATFORM [PDF]

Минералогия
Crystallization conditions of olivine in dunites of the Guli massif (Siberian Platform) are established using petrological, geochemical, mineralogical and thermobarogeochemical methods.
V.A. Simonov, A.V. Kotlyarov, V.V. Sharygin, Yu.R. Vasiliev   +3 more
doaj   +1 more source

An olivine-clinopyroxene geothermometer

Contributions to Mineralogy and Petrology, 1976
The olivine-clinopyroxene (Fe-Mg partition) geothermometer of Powell and Powell (1974) was derived on the basis of clinopyroxene mixing parameters which imply a large miscibility gap in CaFeSi2O6-CaMgSi2O6-CaAl2SiO6 clinopyroxenes at 950° C. Application of the Powell and Powell thermometer in an empirical way (ignoring likely errors in mixing ...
openaire   +1 more source

Sustainable Revival of Spent Lithium Iron Phosphate Cathodes in Li‐Ion Batteries: Recycling and Surface Engineering Approaches

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Schematic illustration of the lifecycle of LiFePO4 cathodes. Lithiation and delithiation reactions happen through its discharging and charging processes. Recycling pathways including hydrometallurgy, pyrometallurgy, and direct regeneration enable sustainable reuse of spent LFP materials. Surface modification approaches (carbon, polymer, and metal/metal
Yan He, Ruigang Wang
wiley   +1 more source

THERMOBAROMETRY OF DEPLETED PERIDOTITES

Геодинамика и тектонофизика
An assessment was made of the possibility of using olivine thermobarometry for xenoliths of depleted peridotites from the Udachnaya pipe (Yakutia), represented by 76 megacrystalline dunites and 5 megacrystalline harzburgites.
L. N. Pokhilenko, V. N. Korolyuk, N. P. Pokhilenko   +2 more
doaj   +1 more source

Late Pleistocene Volcanic Rocks From Tengchong Volcanic Field at SE Tibetan Plateau: Constraints on Petrogenesis and Mantle and Crustal Processes

Geological Journal, EarlyView.
Early zircon saturation and crystallisation occur in mafic (52–54 wt.% SiO2) lavas at Tengchong volcanic field. These early formed zircons with high δ18O (6.6‰–7.9‰) indicates mantle enrichment by subducted supracrustal materials. ABSTRACT Late Pleistocene (< 0.2 Ma) mafic and evolved volcanic rocks occur in northern Tengchong Volcanic Field, SE ...
Lizhu Wang, Haibo Zou
wiley   +1 more source

Artificial intelligence–driven decoupling structure–activity relationship for lithium‐ion batteries

InfoScience, EarlyView.
Artificial intelligence can efferently accelerate the high‐throughput screening of battery materials, the analysis of multiphase mechanisms, and the precise prediction of capacity and cycle life. This review systematically summarizes the applications of machine learning (ML) in decoupling the complex structure‐activity relationships of lithium‐ion ...
Tao Wang, Yuhang Meng, Tianhao Chen, Xiangfen Jiang, Yoshio Bando, Jinjue Zeng, Xuebin Wang   +6 more
wiley   +1 more source

Severe Strain‐Induced Olivine‐Ringwoodite Transformation at Room Temperature: Key to Enigmas of Deep‐Focus Earthquake

Geophysical Research Letters
Deep‐focus earthquakes at 350–660 km are presumably caused by olivine‐spinel phase transformation (PT). This cannot, however, explain the observed high seismic strain rate, which requires PT to complete within seconds, while metastable olivine does not ...
F. Lin, V. I. Levitas, S. Yesudhas, A. Dhar, J. Smith   +4 more
doaj   +1 more source

Jewelled Byzantine and Medieval Reliquaries of the True Cross: Peridots and Other Gemstones in Material and Symbolic Perspective

Journal of Raman Spectroscopy, EarlyView.
An interdisciplinary in situ study of jewelled reliquaries of the True Cross integrates gemmology and portable analytical techniques, revealing new evidence on the identification and symbolic role of peridots and other gemstones. ABSTRACT Jewelled crosses containing relics of the True Cross occupy a central position in the devotional, artistic and ...
Stefania Martiniello, Stefano Legnaioli, Simona Raneri   +2 more
wiley   +1 more source

Finding the Perfect Match: Investigation of 1,2‐Diketone‐Based Materials for Use as Cathode Active Material in Rechargeable Magnesium Batteries

Small, EarlyView.
A novel and generally applicable early screening method for 1,2‐diketones via cyclic voltammetry and DFT computations identifies phenanthrenequinone as a suitable candidate as cathode active material for use in RMB. Its successful incorporation into a polymer enabled promising lithium and magnesium battery performance.
Noushine Dorrani, Hendrik Koger, Ingo Krossing, Daniel B. Werz   +3 more
wiley   +1 more source