-
crossref
Xiande Xie, Ming Chen
2020-03-10T18:06:33Z
置信度 0.70
-
The Miller Butte (MIB) 03002 iron meteorite was found during the XIX (2003-2004) Antarctic campaign of the Italian Programma Nazionale delle Ricerche in Antartide (PNRA) in northern Victoria Land (Antarctica). MIB 03002 is classified as a medium octahedrite be…
crossref
Massimo D'Orazio, Luigi Folco, Kees C. Welten, Marc W. Caffee 等
2006-12-18T23:26:08Z
置信度 0.70
-
crossref
Victor M. Kvasnytsya, Richard Wirth
2022-03-29T09:30:36Z
置信度 0.70
-
crossref
Robert T. Dodd
2004-10-20T05:02:07Z
置信度 0.70
-
crossref
Robert T. Dodd
2004-11-03T19:20:03Z
置信度 0.70
-
crossref
Rainer Thomas, Paul Davidson
2018-06-14T04:53:28Z
置信度 0.70
-
The Lost City meteorite has been classified as a type H5 chondrite on the basis of its bulk chemical composition, its mineralogy, and its petrography. Chemical analyses were done on magnetic and nonmagnetic fractions, which were separately analyzed by a combin…
openalex
David F. Nava, Louis S. Walter, Arthur S. Doan, D. F. Nava 等
1971-06-10
置信度 0.72
MeteoritePetrographyChondriteElectron microprobeGeology
-
The new mineral chukanovite, Fe2(CO3)(OH)2, occurs in cavities of weathered fragments of the Dronino ataxite iron \nmeteorite found near the Dronino village, Kasimov district, Ryazan’ Oblast, Russia. It is a product of terrestrial alteration of \nmeteorite iro…
crossref
Igor V. Pekov, Natale Perchiazzi, Stefano Merlino, Vyacheslav N. Kalachev 等
2007-11-13T01:30:31Z
置信度 0.70
-
openalex
Nabil Z. Boctor, Henry O.A. Meyer, Gunnar Kullerud, N. Z. Boctor 等
1976-09-01
置信度 0.72
GeologyIlmeniteTroiliteMagnetiteMeteorite
-
The Homewood meteorite is a slightly weathered find of 325 grams discovered in 1970 about 64 km southwest of Winnipeg, Manitoba. It consists of olivine (Fa 25.4 ; 43.8 normative wt. percent), orthopyroxene (Fs 23.3 ; 28.5 percent), kamacite and taenite (7.5 pe…
crossref
W.K. Mysyk, R.B. Ferguson, F.C. Hawthorne, K. Ramlal
2015-11-13T15:49:18Z
置信度 0.70
-
crossref
Xiande Xie, Ming Chen
2020-03-10T18:06:33Z
置信度 0.70
-
openalex
A.W. Needham, R.L. Abel, T. Tomkinson, M.M. Grady 等
2012-09-22
置信度 0.72
MeteoriteGeologyHaliteGeochemistryMars Exploration Program
-
openalex
F. Poulet, O. Ruesch, Y. Langevin, H. Hiesinger
2014-06-11
置信度 0.72
OlivinePyroxeneMeteoritePlagioclaseGeology
-
Many meteoritic minerals can be identified microscopically in reflected light; these include both opaque and nonopaque phases. The appearance of numerous opaque minerals is discussed in detail in two comprehensive books by Paul Ramdohr (1969, 1973).
crossref
2021-08-11T00:05:46Z
置信度 0.70
-
crossref
V. Semenenko, A. Girich, N. Kychan
2017-09-17T08:18:25Z
置信度 0.70
-
crossref
Richard D. Hagni
2016-04-25T22:26:11Z
置信度 0.70
-
crossref
Melinda Jo Rucks, T.D. Glotch
2016-10-20T18:06:14Z
置信度 0.70
-
We report spectroscopic, bulk, trace element and mineralogical composition of a fresh meteorite fall at Bali-Chapori village, near Kamargaon Town, Assam, India (263756.99 N; 9346 11.51 E) on November 13 th , 2015. The whole rock analyses and the composition of…
openalex
Bhaskar J. Saikia, G. Parthasarathy, R. R. Borah, M. Satyanarayanan 等
2017-08-01
置信度 0.72
MeteoriteChondriteOrdinary chondriteGeologyCarbonaceous chondrite
-
openalex
MOHAMMED IKRAMUDDIN, MICHAEL E. LIPSCHUTZ, W. R. VAN SCHMUS, Mohammed Ikramuddin 等
1975-02-01
置信度 0.72
Allende meteoriteMeteoriteChondriteTrace elementGeology
-
Czochralskiite, Na 4 Ca 3 Mg(PO 4 ) 4 , is the second new phosphate mineral found in the Morasko IAB-MG iron meteorite. This very rare mineral occurs in phosphate inclusions (nodules) with graphite rims enclosed in the kamacite–taenite matrix of the meteorite.…
crossref
Łukasz Karwowski, Ryszard Kryza, Andrzej Muszyński, Joachim Kusz 等
2016-06-15T15:19:29Z
置信度 0.70
-
Electron microprobe analyses of olivine, orthopyroxene, clinopyroxene, plagioclase feldspar, chromite, whitlockite, apatite, troilite and metals indicate that the Vilna meteorite is a hypersthene chondrite belonging to the L5 or L6 subgroups.
openalex
D. G. W. Smith, R. E. Folinsbee, M. Hall‐Beyer, David G. Smith
1973-09-01
置信度 0.72
TroiliteWhitlockitePlagioclaseGeologyMeteorite
-
Minerals in meteorites give constraints on the formation history of not only meteorites, but the solar system. Here I introduce some characteristic minerals in meteorites. Enstatite chondrites contain abundant unusual sulfide and metallic minerals that were fo…
openalex
Makoto KIMURA, Makoto Kimura
2015-01-01
置信度 0.72
MeteoriteEnstatiteChondriteChondruleAstrobiology
-
A total chemical analysis of the Isna, Egypt, meteorite is similar to analyses for chondrites of type C3, Ornans sub‐type; however, comparison with one group of chemical data indicates that Isna is intermediate between the C3(O)'s and C3(V)'s in terms of total…
openalex
Robert L. Methot, Albert F. Noonan, Eugene Jarosewich, Aurelio A. deGasparis 等
1975-06-01
置信度 0.72
TroiliteNephelineKamaciteEnstatiteAugite
-
Abstract— Bagnone, the largest Italian iron meteorite (48 kg), was found as a single mass at the beginning of the 20th century while ploughing a field close to the Bagnone Castle (Massa Carrara, northern Tuscany). The morphology of the external surface suggest…
openalex
M. D'Orazio, L. Folco, N. Perchiazzi, Massimo D’Orazio 等
2004-08-01
置信度 0.72
MeteoriteGeologyIron meteoriteMineralogyGeochemistry
-
Abstract— An oxide layer adjacent to the surface of the Hoba Ni‐Fe meteorite was analyzed chemically and mineralogically. Maghemite, magnetite, goethite and lepidocrocite were the main Fe minerals found in the oxide layer surrounding Hoba. Most of the Ni from …
openalex
D. C. Golden, D. W. Ming, M. E. Zolensky
1995-07-01
置信度 0.72
MaghemiteMeteoriteLepidocrociteMagnetiteTroilite
-
crossref
Lindsay McHenry
2013-06-03T22:09:03Z
置信度 0.70
-
openalex
Huanxin LIU, Bingkui MIAO, Lilin HUANG, Yulong WANG 等
2017-05-01
置信度 0.72
GeologyMeteoriteAstrobiologyPetrologyIgneous petrology
-
Abstract— Here we report the petrography, mineralogy, and trace element geochemistry of the Dhofar 1180 lunar meteorite. Dhofar 1180 is predominantly composed of fine‐grained matrix with abundant mineral fragments and a few lithic and glassy clasts. Lithic cla…
openalex
Aicheng Zhang, Weibiao Hsu, Ai‐Cheng Zhang
2009-09-01
置信度 0.72
GeochemistryMaficGeologyBasaltPetrography
-
Melting experiments at high-pressure and temperature were conducted at pressures from 16 to 25 GPa using chondritic starting material but with slightly enhanced Na- and K-contents while keeping the chondritic Na/K ratio constant. The experiments revealed that …
crossref
Ming Chen, Ahmed El Goresy, Dan Frost, Philippe Gillet
2004-03-30T22:35:35Z
置信度 0.70
-
The Bocaiuva iron contains 10 to 15% by volume of silicate inclusions which are surrounded by kamacite (6.5 wt % Ni). The metal shows a Widmanstätten pattern in metal areas devoid of silicates; taenite evolved in plessite fields. The silicate inclusions occur …
openalex
C. Desnoyers, M. Christophe Michel‐Levy, I.S. Azevedo, R.B. Scorzelli 等
1985-03-01
置信度 0.72
KamacitePyrrhotiteChromiteGeologyTroilite
-
New data on the mineral composition of the Severny Kolchim meteorite, found in Perm Region in 1965, are presented. It has been found that that the meteorite matter is composed of olivine (chrysolite), orthopyroxene (bronzite), clinopyroxene (diopside), plagioc…
openalex
Yu. V. Erokhin, V. A. Koroteev, V. V. Khiller, K. S. Ivanov 等
2018-09-01
置信度 0.72
TroiliteMeteoriteGeologyChromiteIlmenite
-
Abstract— Queen Alexandra Range (QUE) 93069 is a glass‐rich regolith breccia derived from the lunar highlands. The high abundance of glassy fragments, the presence of agglutinates, the small size of all mineral and glass fragments, the presence of mostly melt …
openalex
Christian KOEBERL, Gero KURAT, Franz BRANDSTÄTTER, Christian Koeberl 等
1996-11-01
置信度 0.72
AnorthositeGeologyGeochemistryBrecciaMafic
-
New data on the mineral composition of Kargapole meteorite, which was found in Kurgan oblast in 1961, are presented. It has been established that the meteoritic material is represented by olivine (chrysolite), orthopyroxene (bronzite), clinopyroxene (diopside)…
crossref
Yu. V. Erokhin, V. A. Koroteev, V. V. Khiller, E. V. Burlakov 等
2018-01-02T13:52:46Z
置信度 0.70
-
Approximately 10% of cosmic spherules-microscopic extraterrestrial particles that melt upon atmospheric entry and dominate the influx of astromaterials to Earth-exhibit anomalous oxygen isotopic compositions, suggesting an asteroidal source not represented in …
europepmc
2026
置信度 0.80
-
We present an innovative, cost-effective framework integrating laboratory Hyperspectral Imaging (HSI) of the BECHAR 010 lunar meteorite with ground-based lunar HSI and supervised Machine Learning (ML) to generate high-fidelity mineralogical maps. A \SI{3}{\mil…
europepmc
2026
置信度 0.80
-
Light elements, such as C, S, Si, O, C, and H, are thought to be present in Earth's liquid-Fe outer core. These elements lower melting temperatures, thereby allowing the core to remain in liquid state at high pressure and influencing magnetic and geodynamic pr…
europepmc
2025
置信度 0.80
-
The search for organic matter on Mars has rapidly evolved in the past decade with simple aromatic, S-heterocycles, and aliphatic organic molecules detected in Gale crater. We report the in situ detection of >20 organic molecules from clay-bearing sandstones in…
europepmc
Amy J. Williams, J. L. Eigenbrode, M. Millán, Ross H. Williams 等
2026
置信度 0.80
Mars Exploration ProgramOrganic moleculesTetramethylammonium hydroxideAstrobiologyOrganic matter
-
The recent discovery of a 4.1-billion-year-old (Ga) Martian gabbroic diorite enables an assessment of water reservoirs on early Mars. Measurements of H 2 O and D/H in igneous Ca-phosphates record mixing between D-poor magmatic water and a D-rich component that…
europepmc
2026
置信度 0.80
-
Using a Raman spectrometer onboard the Perseverance rover, we report the heterogeneous distribution of organic carbon within mudstones located in an ancient river valley on Mars. Measurements of two mudstones show hundreds of organic detections, making this th…
europepmc
2026
置信度 0.80
-
Solar System bodies have similar abundances of non-volatile elements. Asteroids are categorized as unmelted chondritic bodies or as differentiated bodies formed by extensive to global melting of chondritic progenitors. Reflectance spectra show asteroids are co…
europepmc
2026
置信度 0.80
-
Abstract Chondritic meteorites (chondrites) contain evidence for the interaction of liquid water with the interiors of small bodies early in Solar System history. Here we review the processes, products and timings of the low-temperature aqueous alteration reac…
europepmc
Martin Lee, C. M. O'd. Alexander, A. Bischoff, A. J. Brearley 等
2025
置信度 0.80
ChondriteAstrobiologyPlanetary scienceAqueous solutionGeology
-
Abstract: The effects of post-hydration heating over a broad range of temperatures are evident in many Mighei-like carbonaceous (CM) chondrites as a variety of mineral transitions. To better understand these processes and how a CM chondrite's starting composit…
europepmc
Laura E. Jenkins, A. J. King, Martin Lee, Luke Daly 等
2024
置信度 0.80
MeteoriteChondriteMurchison meteoriteEnstatiteCalcite
-
The Apollo 17 73001/73002 double drive tube, collected at the base of the South Massif in the Taurus-Littrow Valley, was opened in 2019 as part of the Apollo Next Generation Sample Analysis program (ANGSA). A series of continuous thin sections were prepared ca…
europepmc
2024
置信度 0.80
-
This review explores the timescales of the initial phase of planet formation, from nebular dust (CAIs and chondrules) to planetesimal accretion and differentiation, using evidence from meteorite research. Aluminium-Mg systematics of CAIs indicate either an ext…
europepmc
2025
置信度 0.80
-
Samples returned from C-type asteroid (162173) Ryugu by JAXA's Hayabusa2 spacecraft provide material free of terrestrial alteration for analysis. Previous work shows that Ryugu was aqueously altered below 100 °C under neutral to alkaline fluid conditions. Such…
europepmc
2025
置信度 0.80
-
Physical materials from planetary bodies are crucial for understanding fundamental processes that constrain the evolution of the solar system, as samples can be analyzed at high precision and accuracy in Earth-based laboratories. Mars is the only planet outsid…
europepmc
Arya Udry, Amanda Ostwald, James M.D. Day, L. J. Hallis
2025
置信度 0.80
MeteoriteAstrobiologyMartianEarth scienceMars Exploration Program
-
Magnesium phosphate grains, minor accessory minerals found on the primitive meteorite Yamato 980115 (Y 980115), were investigated by Raman microspectroscopy. All magnesium phosphate grains found in the present study can be assigned to farringtonite, dehydrated…
europepmc
2025
置信度 0.80
-
The fracture behavior of rocks on asteroids offers insights into the evolution and dynamics of their boulders and regolith while providing critical data for developing hazard mitigation strategies. Information about the mechanical properties of asteroidal boul…
europepmc
2025
置信度 0.80
-
The radiogenic isotopic compositions of basaltic Martian meteorites (shergottites) and clinopyroxene/olivine cumulate meteorites (nakhlite/chassignites) are used to define the global evolution of Mars. However, the two main groups of meteorites demonstrate tha…
europepmc
L. E. Borg, T. S. Kruijer
2025
置信度 0.80
MeteoriteMartianRadiogenic nuclideGeologyMars Exploration Program
-
Models of planetary core formation traditionally involve the fractionation of Fe,Ni-metal melts from silicate mantles after extensive silicate melting. However, in planetary bodies that form farther from their central star, where moderately volatile elements a…
europepmc
2025
置信度 0.80
-
Meteorites are a unique source of geological information about our early Solar System and the difference between planets and asteroids. In this study, meteorite Ribbeck (2024 BX1, SAR 2736) from the recently fallen asteroid (21.01.2024), collected right after …
europepmc
2025
置信度 0.80
-
The Red Planet is a magnetic planet. The Martian crust contains strong magnetization from a core dynamo that likely was active during the Noachian period when the surface may have been habitable. The evolution of the dynamo may have played a central role in th…
europepmc
2025
置信度 0.80
-
Clay surfaces have been invoked as crucial components in the origin of life processes due to their ability to concentrate organics and abiotically catalyse (bio)polymer production. Still, the importance of the mutual nature of organo-clay interactions and the …
europepmc
Orr Rose Bezaly, Annemieke Petrignani, Helen E. King
2025
置信度 0.80
MeteoriteExfoliation jointAbiotic componentCompartment (ship)Amino acid
-
Ordinary chondrites (OCs) comprise ~ 87% of meteorites and are key to decoding early Solar System processes, yet H–L–LL classification is often ambiguous, especially between L and LL. We compile ~ 1100 published bulk analyses and train Support Vector Machine (…
europepmc
2026
置信度 0.80
-
The radioactive gas radon-222, a fluid and aerosol tracer in Earth’s lithosphere and atmosphere, can also reveal subtle rock physics processes in extraterrestrial environments, such as those involving water, but remains poorly constrained in planetary bodies d…
europepmc
Frédéric Girault, L. Ferrière, Carine Sadaka, Íñigo de Loyola Chacartegui Rojo 等
2025
置信度 0.80
Mars Exploration ProgramAstrobiologyMartianMeteoriteExploration of Mars
-
The 2-billion-year-old basalts collected by the Chang'e 5 mission are younger than any other sampled lunar igneous rock. These lavas provide critical insight into the evolution of the Moon at a time when magmatism was waning and represent a key data point for …
europepmc
2025
置信度 0.80
-
Multiple bio-essential elements such as nitrogen and phosphorus are found in all forms of life discovered thus far. In addition to these major elements, many transition metals have been proposed as crucial components for prebiotic and early cellular processes.…
europepmc
2025
置信度 0.80
-
RATIONALE: Micrometeorites are extraterrestrial particles smaller than ~2 mm in diameter, most of which melted during atmospheric entry and crystallised or quenched to form 'cosmic spherules'. Their parentage among meteorite groups can be inferred from triple-…
europepmc
Seann McKibbin, J Avila, T. R. Ireland, Matthias Van Ginneken 等
2024-10-30
置信度 0.80
ChemistryIsotopes of oxygenSecondary ion mass spectrometryMicroprobeAnalytical Chemistry (journal)
-
Nanoscale Fourier transform infrared (Nano-FTIR) imaging and spectroscopy correlated with photoluminescence measurements of lunar Apollo samples with different surface radiation exposure histories reveal distinct physical and chemical differences associated wi…
europepmc
A. M. Grice, P. C. Stancil, Mahdi Ghafariasl, S. Singh 等
2025
置信度 0.80
WeatheringSpace weatheringNanoscopic scaleSilicateMaterials science
-
The Moon's farside South Pole-Aitken (SPA) basin is the largest and oldest visible impact basin in the inner Solar System. Determining the timing of this catastrophic event is key to understanding the onset of the lunar basin-forming epoch, with implications f…
europepmc
K. H. Joy, Na Wang, J. F. Snape, A. GOODWIN 等
2024-10-16
置信度 0.80
Structural basinGeologyRadiometric datingImpact structureLithology
-
Carbonate minerals are of particular interest in paleoenvironmental research as they are an integral part of the carbon and water cycles, both of which are relevant to habitability. Given that these cycles are less constrained on Mars than they are on Earth, t…
europepmc
2024
置信度 0.80
-
Bulk composition, mineralogy and microchemistry of various fractions of the filling of the Crater No. 4 at Emmerting were investigated. Here we present mainly the fine fractions, which, in contrast to pebbles larger than ca. 4 cm, are relatively poor in materi…
europepmc
2024
置信度 0.80
-
Presolar grains are nanometre-scale dust grains that exhibit large isotope excursions that illustrate the stellar isotopic input into the Solar System. Further, it is thought that they were differentially incorporated into meteorite parent bodies and thus can …
europepmc
2025
置信度 0.80
-
The 2.7 µm absorption band, represented by OH groups, in the near-infrared reflectance spectra of primitive Solar System bodies could be an indicator of the cause and degree of space weathering. We compared the absorption bands of particles sampled from the su…
europepmc
Shuhei Furukawa, Tatsuaki Okada, Kentaro Hatakeda, Rei Kanemaru 等
2025
置信度 0.80
InfraredRadiationWeatheringVariation (astronomy)Space weathering
-
The extent of moderately volatile elements (MVE) depletion and its effects on the Moon's evolutionary history remain contentious, partly due to unintentionally biased sampling by the Apollo missions from the Procellarum KREEP Terrane. In this study, we analyze…
europepmc
2025
置信度 0.80
-
Quasicrystals are of interest because of their unique nonperiodic structures and physical properties. Motivated by naturally occurring icosahedral AlCuFe- and decagonal AlNiFe-phases hosted in a shocked meteorite, different laboratories have undertaken a serie…
europepmc
2024
置信度 0.80
-
The recent return of samples from asteroid 162173 Ryugu provides a first insight into early Solar System prebiotic evolution from known planetary bodies. Ryugu's samples are CI chondrite-like, rich in water and organic material, and primarily composed of phyll…
europepmc
2024
置信度 0.80
-
. A comparative analysis of the relationship between luminescence intensity and temperature in samples of yellow and blue apatite was conducted. The findings of this analysis indicated that yellow apatite exhibits greater thermal stability in comparison to blu…
europepmc
Wenkai Liang, Wang Nai, Yingrui Gan
2025
置信度 0.80
ApatiteFluorescenceCharacterization (materials science)MineralogyChemistry
-
Simultaneous measurements of HDO, H 2 18 O, and H 2 16 O in water evolved during pyrolysis of powdered rock samples acquired by the Curiosity rover within Gale crater's clay-bearing units indicate extreme and variable heavy-isotope enrichments averaging ~4.5 t…
europepmc
2025
置信度 0.80
-
Extra-terrestrial mining and metal processing are vital for access to strategic metals for space exploration. This study demonstrates for the first time the catalytic dissolution of metals from meteorite proxies of metal-rich asteroids using a deep eutectic so…
europepmc
2023
置信度 0.80
-
Pure siderite [Fe II CO 3 ] was recently discovered in abundant quantities (4.8 to 10.5 wt.%) by the Curiosity rover at Gale crater, Mars. Diagenetic alteration of siderite likely caused the carbonate-sequestered CO 2 to be released back into the atmosphere an…
europepmc
2025
置信度 0.80
-
Studies to understand the growth of organisms on Mars are hampered by the use of simulants to duplicate martian mineralogy and chemistry. Even though such materials are improving, no terrestrial simulant can replace a real martian sample. Here we report the us…
europepmc
2023
置信度 0.80
-
To what extent are naturally evolving systems limited in their potential diversity (i.e. "bounded") versus unrestricted ("open-ended")? Minerals provide a quantitative model evolving system, with well-documented increases in mineral diversity through multiple …
europepmc
2024
置信度 0.80
-
Identifying lithologies in meteorite impact craters is an important task to unlock processes that have shaped the evolution of planetary bodies. Traditional methods for lithology identification rely on time-consuming manual analysis, which is costly and limits…
europepmc
2024
置信度 0.80
-
The NASA Psyche mission will explore the structure, composition, and other properties of asteroid (16) Psyche to test hypotheses about its formation. Variations in radar reflectivity, density, thermal inertia, and visible to near-infrared (VNIR) reflectance sp…
europepmc
2023
置信度 0.80
-
Deeply fractured rocks of meteorite impact structures have been hypothesized as hot spots for microbial colonization on Earth and other planetary bodies. Biosignatures of such colonization are rare, however, and most importantly, direct geochronological eviden…
europepmc
2025
置信度 0.80
-
Abstract Asteroid (3200) Phaethon experiences extreme solar radiant heating ( ~ 750 °C) during perihelion (0.14 au), leading to comet-like activity. The regolith composition and mechanism of volatile emission are unknown but key to understanding JAXA’s DESTINY…
europepmc
Martin D. Suttle, Lorenz F. Olbrich, Charlotte L. Bays, Liza Riches
2024
置信度 0.80
RegolithAsteroidAstrobiologyCometComposition (language)
-
Comparison of δ 74/70 Ge data obtained for different samples using (A) either an Aridus desolvator or a hydride generator, or (B) either a Neptune Plus or a Neoma MC-ICP-MS. Both introduction systems and mass spectrometers yield consistent results.
europepmc
Elias Wölfer, Christoph Burkhardt, T. Kleine
2025
置信度 0.80
GermaniumSpike (software development)IsotopeIsotopes of germaniumAnalytical Chemistry (journal)
-
Abstract Organic matter in meteorites reveals clues about early Solar System chemistry and the origin of molecules important to life, but terrestrial exposure complicates interpretation. Samples returned from the B-type asteroid Bennu by the Origins, Spectral …
europepmc
D. P. Glavin, Jason P. Dworkin, C. M. O'd. Alexander, José C. Aponte 等
2025
置信度 0.80
AsteroidNitrogenAstrobiologyOrganic matterChemistry
-
We provide new support for habitable microenvironments in the near-subsurface of Mars, hosted in Fe- and Mg-rich rock units, and present a list of minerals that can serve as indicators of specific water-rock reactions in recent geologic paleohabitats for follo…
europepmc
2023
置信度 0.80
-
NASA's OSIRIS-REx mission characterized the asteroid Bennu and delivered pristine samples of its regolith to Earth. Coordinated analyses of this primitive, carbonaceous material are elucidating the abiotic formation and inventory of prebiotic organic compounds…
europepmc
Angel Mojarro, José C. Aponte, Jason P. Dworkin, Jamie E. Elsila 等
2025
置信度 0.80
AstrobiologyChemistryChondriteRegolithAbiogenesis
-
Abstract Porosity affects key astromaterial processes from disruption in our atmosphere and impact with the ground, to the comminution of boulders by thermal and impact processes and slope mechanics on asteroid surfaces, to access and utilization of in-situ re…
europepmc
L. A. J. Garvie, László Trif, Desireé Cotto-Figueroa, Erik Asphaug 等
2024
置信度 0.80
PorosityMeteoriteSpecific surface areaMineralogyOutgassing
-
Aspects of the Quaternary sedimentary geology of South-East Asia have proven problematic in terms of interpretation as to the origins and relationships of the surface sediment layers. The MIS 20 large meteorite impact ( c ., 788 to 785 ka) occurred within main…
europepmc
2024
置信度 0.80
-
In 1967, a diamond polymorph was reported from hard, diamond-like grains of the Canyon Diablo iron meteorite and named lonsdaleite. This mineral was defined and identified by powder X-ray diffraction (XRD) features that were indexed with a hexagonal unit cell.…
europepmc
2023
置信度 0.80
-
This paper presents the first detailed hydrogeochemical study of the Umm Al Heesh lake, located in in Rub' Al Khali, Saudi Arabia, the largest continuous sand desert on Earth. Analysis of the salt precipitation, geochemical and isotope facies of the water indi…
europepmc
2025
置信度 0.80
-
The Psyche mission's Oxidation-Reduction Working Group is focused on understanding, determining, and applying the redox state of (16) Psyche to understand the origin of a metal-rich world. The oxidation-reduction state of an asteroid, along with its temperatur…
europepmc
2022
置信度 0.80
-
Water inventories in Martian magmas are poorly constrained. Meteorite-based estimates range widely, from 10 2 to >10 4 ppm H 2 O, and are likely variably influenced by degassing. Orbital measurements of H primarily reflect water cycled and stored in the regoli…
europepmc
2022
置信度 0.80
-
Organic molecules are ubiquitous in primitive solar system bodies such as comets and asteroids. These primordial organic compounds may have formed in the interstellar medium and in protoplanetary disks (PPDs) before being accreted and further transformed in th…
europepmc
2024
置信度 0.80
-
Lunar mare basalts illuminate the nature of the Moon's mantle, the lunar compositional asymmetry and the early lunar magma ocean (LMO) 1-3 . However, the characteristics of the mantle beneath the vast South Pole-Aitken (SPA) basin on the lunar farside remain a…
europepmc
2025
置信度 0.80
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Ferromagnetic minerals in lunar materials record key information regarding the Moon’s ancient dynamo, impact events, and space weathering. However, interpreting the magnetic signals is complicated by their diverse origins and properties. Here, we present compr…
europepmc
Jinhua Li, Xing Lin, Zheng Gong, Jiawei Liu 等
2025
置信度 0.80
FerromagnetismSoil waterGeologyGeochemistryAstrobiology
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Carbonaceous meteorites contain diverse soluble organic compounds. These compounds formed in the early solar system from volatiles accreted on tiny dust particles. However, the difference in the organic synthesis on respective dust particles in the early solar…
europepmc
2023
置信度 0.80
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We present new mineralogical data of cronstedtite from the Southern-2 orebody, located in the South-Western branch of the Talnakh intrusion (Noril'sk area) composed of massive sulfides in which the total amount of oxides and silicates does not exceed 1-3 vol%.…
europepmc
2023
置信度 0.80
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Samples of asteroid (101955) Bennu delivered by the OSIRIS-REx mission offer the opportunity to study pristine planetary materials unchanged by exposure to the terrestrial environment. Here we use a combination of X-ray diffraction and various electron microsc…
europepmc
T. J. Zega, T. J. McCoy, S. S. Russell, L. P. Keller 等
2025
置信度 0.80
Hydrothermal circulationGeologyGeochemistryMineralogyPaleontology
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Abstract Returned samples from the carbonaceous asteroid (162173) Ryugu provide pristine information on the original aqueous alteration history of the Solar System. Secondary precipitates, such as carbonates and phyllosilicates, reveal elemental partitioning o…
europepmc
Toshihiro Yoshimura, Daisuke Araoka, Hiroshi Naraoka, Saburo Sakai 等
2024
置信度 0.80
Isotopes of magnesiumMagnesiumAqueous solutionIsotopeAsteroid
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Meteorites preserve evidence of processes on their parent bodies, including alteration, metamorphism, and shock events. Here we show that the Kakowa (L6) ordinary chondrite (OC) preserves both shock-melt veins and pockets of detrital grains from a brecciated a…
europepmc
2022
置信度 0.80
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The new Cuban chondrite, Viñales, fell on February first, 2019 at Pinar del Rio, northwest of Cuba (22°37′10″N, 83°44′34″W). A total of about 50–100 kg of the meteorite were collected and the masses of individual samples are in a range 2–1100 g. Two polished t…
europepmc
Feng Yin, Deqiu Dai
2021
置信度 0.80
MeteoriteGeologyGeochemistryAstrobiologyPhysics
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Understanding the longevity of Mars's dynamo is key to interpreting the planet's atmospheric loss history and the properties of its deep interior. Satellite data showing magnetic lows above many large impact basins formed 4.1-3.7 billion years ago (Ga) have be…
europepmc
2024
置信度 0.80
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A lunar feldspathic breccia meteorite, the Northwest Africa (NWA) 11273, was analyzed to compensate the lack of scientific data available about its mineralogy and geochemistry. In order to obtain a deeper characterization of the sample, a strategy based on the…
europepmc
2021
置信度 0.80
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The Hayabusa2 mission was tasked with returning samples from the C-complex asteroid Ryugu (1999 JU3), in order to shed light on the formation, evolution and composition of such asteroids. One of the main science objectives was to understand whether such bodies…
europepmc
2023
置信度 0.80
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Mars Sample Return (MSR) has been the highest flagship mission priority in the last two Planetary Decadal Surveys of the National Academies of Science, Engineering, and Medicine (hereafter, "the National Academies") and was the highest priority flagship for Ma…
europepmc
H. Y. McSween, V. E. Hamilton, Kenneth A. Farley
2025
置信度 0.80
Mars Exploration ProgramAstrobiologySample (material)Resource (disambiguation)Planetary science